Kaizen #103 - Bulk Write API using PHP SDK (v5) - Part I

Kaizen #103 - Bulk Write API using PHP SDK (v5) - Part I

Hi everyone and welcome to another amazing Kaizen week!

This week, we will discuss and explore Bulk Write API in detail, and how to implement the same using Zoho CRM PHP SDK. Please note that the information in the article holds true for Zoho CRM PHP SDK supporting version 5 of Zoho CRM APIs.

What is Bulk Write API?

The Bulk Write API enables you to efficiently insert, update, or upsert a large dataset into your CRM account. As this is an asynchronous API, the records will not be added immediately, instead a job will be scheduled to do so. You will receive a notification at the specified callback URL or you can periodically check the job status.

The Bulk Write API allows you to insert, update, or upsert up to 25,000 records in a single API call. This is much more than the maximum of 100 records that you can insert, update, or upsert using the Insert, Update, and Upsert Records API. 

When to use Bulk Write API?

  • When you want to schedule a job to import a huge volume of data in your CRM account.
  • When you want to insert, update, or upsert more than 100 records in a single API call. 
  • When you want to perform background processes like migration and initial data sync between Zoho CRM and external services.

However, the Bulk Write API consumes 500 credits per job, while the Insert, Update, and Upsert records API consumes 1 credit per 10 records. So, if you only need to insert, update, or upsert a small number of records (5,000 or less), it is economical to use the Records API as it will consume fewer credits.

Here are the major differences between Record APIs and Bulk Write API.

Insert, Update, Upsert Records API
Bulk Write API
You can insert, update, or upsert only up to 100 records per API call.
You can insert, update, or upsert 25000 records per API call.
The response is available instantly.
The response to the Bulk Write API request will not be available immediately. You can check the status of the job by polling for it, or you can wait for the status to be available in the callback URL after the job has completed.
The API consumes 1 credit per 10 records.
Bulk Write API consumes 500 credits per API call. 

Bulk Write API 

To insert, update, or upsert records in bulk, follow the below steps:
  1. Prepare your CSV file
  2. Upload your file in zip format
  3. Create a bulk write job
  4. Check the job status
  5. Download the result

1. Prepare the CSV file

To use the Bulk Write API, you must first create a CSV file containing the data you want to import to Zoho CRM. The first row of the CSV file must contain the field API names, and each subsequent row must contain the data. You can insert, update, or upsert records in a single module using one Bulk Write API call.

Input format for each data type:

Datatype
Description
Single Line
Accepts up to 255 characters.
Accepts alphanumeric and special characters.
Ex: Mike O'Leary
Multi-Line
Small - accepts up to 2000 characters.
Large - accepts up to 32000 characters.
Ex: This is a sample description.
Email
Accepts valid email IDs.
Phone
Accepts up to 30 characters. This limit may vary based on the value configured in 'Number of characters allowed' in the properties pop-up of the field, in UI.

Accepts only numeric characters and '+' (to add extensions). 
Ex: 9800000099
Picklist
You can pass an existing pick list value. If you give a new one, it is automatically added to the pick list set.
The pick list value accepts all alphanumeric and special characters.
Ex: auto mobile
Multiselect Picklist
You can either pass the existing pick list values separated by a semicolon(;) or add a new one.
The pick list value accepts all alphanumeric and special characters.
Ex: Analytics;Bigdata
Date
Accepts date in different formats as mentioned here.
Ex: 2023-05-03
DateTime
Accepts date in different formats as mentioned here.
Ex: 2023-05-03T20:39:19+05:30
Number
Accepts numbers up to 9 digits. This limit may vary based on the value configured in 'Maximum digits allowed' in the properties pop-up of the field, in UI. The accepted formats are mentioned here.
Accepts numeric values.
Ex1: 350
Ex2: 123,344
Currency
Before decimal point - accepts numbers up to 16 digits.  This limit may vary based on the value configured in 'Maximum digits allowed' in the properties pop-up of the field, in UI.
After decimal point - accepts precision up to 9 digits. This limit may vary based on the value configured in 'Number of decimal paces' in the properties pop-up of the field, in UI.
Please note that comma separated digits are accepted.
Ex1: 250000.90
Ex2: 123,456.657483
Decimal
Before the decimal point - accepts numbers up to 16 digits. This limit may vary based on the value configured in 'Maximum digits allowed' in the properties pop-up of the field, in UI.
After the decimal point - accepts precision up to 9 digits. This limit may vary based on the value configured in 'Number of decimal places' in the properties pop-up of the field, in UI.
Accepts comma separated numeric values.
Ex1: 250000.50
Ex2: 123,235.345
Percent
Accepts numbers up to 5 digits.
Accepts only numeric values.
Ex: 25
Long Integer
Accepts numbers up to 18 digits. This limit may vary based on the value configured in 'Maximum digits allowed' in the properties pop-up of the field, in UI.
Accepts only numeric values.
Ex: 0012345600012
Checkbox
Accepts only Boolean values(true,false).
Ex: true
URL
Accepts valid URLs.
Lookup
Accepts the unique ID of the record, which you can get through the get records API.
Use the dot(.) operator to link the record. For instance, if there is an account lookup in the Contacts module, you can give the column name as - Account.id
Ex: Account.id : 4150868000001136302
User
This is a default look-up field for users in Zoho CRM. Accepts the unique ID of the user, which you can get through the get users API.
Ex: User.id

Note:
  • To give multiple values for a multi-select pick list field, enclose them in double quotes("") and separate each value with the semicolon(;).
  • If your multi-line field has more than one line, input them directly by enclosing them in double quotes("").
  • You can only zip one CSV file to upload for bulk write. Adding more than one CSV file into the zip file will result in an error.
  • You can specify a specific format for your number, currency, decimal, date and datetime fields using format key.

Subform Data in Bulk Write API:

The Bulk Write API allows you to import and update records with subforms. To insert or update records with subforms, you must import the parent records first with Bulk Write API, and then the subform records with another Bulk Write API. 

For example, consider an instance where you have a subform named "Contact Details" in the Account module. The subform has the following fields - Contact_Name, Contact_Email and Contact_Phone. You must first create a csv file with the parent records, compress it as a zip file, upload it, and create a bulk write job. 



This is an example csv file. Note the Field API names are in the first row, and the record data is in the subsequent rows.

Once you have imported the parent records, you can upload the subform data CSV. When you prepare the subform data CSV file, it is mandatory to have the parent record ID in the subform data file, along with the subform data. 



This is a sample CSV file for the subform data. The subform data in each row will be added to the corresponding parent record. 

Multiselect Lookup Fields in Bulk Write API

To upload records with multiselect lookup fields, you can follow the same steps as for subforms. First, import the parent records. Then, import the multiselect lookup field data. The CSV file should contain both the parent record ID and the multiselect lookup field data. Please note that this method does not work for line items.

User Lookup in Bulk Write API

To import records with user lookup fields, you can include them in the same CSV file as the parent records. Use the field API name of the user lookup field in the CSV header, and add the unique IDs of the lookup records in the data column for each record.

Once you have prepared the CSV file, compress it as a zip file to upload in the next step. We will add examples of how to add subform data, user lookup and multiselect lookup field data in subsequent sections.

2. Upload your zip file

Once you have your csv file ready and compressed into a zip file, you should upload the same using a POST request. Use the following code snippet to upload the file.


<?php
namespace bulkwrite;

use com\zoho\crm\api\bulkwrite\FileBodyWrapper;
use com\zoho\crm\api\bulkwrite\BulkWriteOperations;
use com\zoho\crm\api\util\StreamWrapper;
use com\zoho\crm\api\bulkwrite\UploadFileHeader;
use com\zoho\crm\api\HeaderMap;

require_once "vendor/autoload.php";

class UploadFile
{
  public static function initialize()
  {
      // Add init code here.
      // Refer to this post for more details
  }

  public static function uploadFile1(string $orgID, string $absoluteFilePath)
  {
    $bulkWriteOperations = new BulkWriteOperations();
    $fileBodyWrapper = new FileBodyWrapper();
    $streamWrapper = new StreamWrapper(null, null, $absoluteFilePath);
    $fileBodyWrapper->setFile($streamWrapper);
    $headerInstance = new HeaderMap();
    //To indicate that this a bulk write operation
    $headerInstance->add(UploadFileHeader::feature(), "bulk-write");
    $headerInstance->add(UploadFileHeader::XCRMORG(), $orgID);
    //Call uploadFile method that takes FileBodyWrapper instance and headerInstance as parameter
    $response = $bulkWriteOperations->uploadFile($fileBodyWrapper, $headerInstance);
    // Add your code to handle the response received in the $response.
  }
}

UploadFile::initialize();
$orgID = "add_your_org_id_here"; // add your zgid which you can obtain using Get Organization API.
$absoluteFilePath = "/Users/test/bulk-write.zip"; //add the absolute file path of your zip file here.
UploadFile::uploadFile1($orgID, $absoluteFilePath);

The uploadFile() method takes two parameters: the organization ID ($orgID) and the absolute file path ($absoluteFilePath) of the file to be uploaded. Within the uploadFile() method, an instance of BulkWriteOperations is created to call the Bulk Write API.  This API is used to upload files to the Zoho File System. The HeaderMap instance is created to hold the necessary headers for the API request. The UploadFileHeader::feature() and UploadFileHeader::XCRMORG() methods are used to set the feature and organization ID headers, respectively. These headers are required to identify the type of operation being performed and the organization that the file is being uploaded.
 The uploadFile() method is called on the BulkWriteOperations instance, passing the FileBodyWrapper and HeaderMap as parameters. The response from the API call will be stored in the $response variable, which contains the file ID as well. We will use this file ID in the next step, creating a bulk write job.

We hope you found this post on the Bulk Write API useful. In next week's post, we will cover how to create a bulk write job, including lookup and user lookup fields and subform data. We will also show you how to check the job status and download the job result.

If you have any specific questions about the Bulk Write API, please leave a comment below,  or reach out to us at support@zohocrm.com. We are happy to help!

Thank you for reading! Stay tuned for more useful posts in the series. See you all next week!

    Access your files securely from anywhere







                            Zoho Developer Community




                                                  • Desk Community Learning Series


                                                  • Digest


                                                  • Functions


                                                  • Meetups


                                                  • Kbase


                                                  • Resources


                                                  • Glossary


                                                  • Desk Marketplace


                                                  • MVP Corner


                                                  • Word of the Day


                                                  • Ask the Experts



                                                            • Sticky Posts

                                                            • Kaizen #226: Using ZRC in Client Script

                                                              Hello everyone! Welcome to another week of Kaizen. In today's post, lets see what is ZRC (Zoho Request Client) and how we can use ZRC methods in Client Script to get inputs from a Salesperson and update the Lead status with a single button click. In this
                                                            • Kaizen #222 - Client Script Support for Notes Related List

                                                              Hello everyone! Welcome to another week of Kaizen. The final Kaizen post of the year 2025 is here! With the new Client Script support for the Notes Related List, you can validate, enrich, and manage notes across modules. In this post, we’ll explore how
                                                            • Kaizen #217 - Actions APIs : Tasks

                                                              Welcome to another week of Kaizen! In last week's post we discussed Email Notifications APIs which act as the link between your Workflow automations and you. We have discussed how Zylker Cloud Services uses Email Notifications API in their custom dashboard.
                                                            • Kaizen #216 - Actions APIs : Email Notifications

                                                              Welcome to another week of Kaizen! For the last three weeks, we have been discussing Zylker's workflows. We successfully updated a dormant workflow, built a new one from the ground up and more. But our work is not finished—these automated processes are
                                                            • Kaizen #152 - Client Script Support for the new Canvas Record Forms

                                                              Hello everyone! Have you ever wanted to trigger actions on click of a canvas button, icon, or text mandatory forms in Create/Edit and Clone Pages? Have you ever wanted to control how elements behave on the new Canvas Record Forms? This can be achieved


                                                            Manage your brands on social media



                                                                  Zoho TeamInbox Resources



                                                                      Zoho CRM Plus Resources

                                                                        Zoho Books Resources


                                                                          Zoho Subscriptions Resources

                                                                            Zoho Projects Resources


                                                                              Zoho Sprints Resources


                                                                                Qntrl Resources


                                                                                  Zoho Creator Resources



                                                                                      Zoho CRM Resources

                                                                                      • CRM Community Learning Series

                                                                                        CRM Community Learning Series


                                                                                      • Kaizen

                                                                                        Kaizen

                                                                                      • Functions

                                                                                        Functions

                                                                                      • Meetups

                                                                                        Meetups

                                                                                      • Kbase

                                                                                        Kbase

                                                                                      • Resources

                                                                                        Resources

                                                                                      • Digest

                                                                                        Digest

                                                                                      • CRM Marketplace

                                                                                        CRM Marketplace

                                                                                      • MVP Corner

                                                                                        MVP Corner









                                                                                          Design. Discuss. Deliver.

                                                                                          Create visually engaging stories with Zoho Show.

                                                                                          Get Started Now


                                                                                            Zoho Show Resources

                                                                                              Zoho Writer

                                                                                              Get Started. Write Away!

                                                                                              Writer is a powerful online word processor, designed for collaborative work.

                                                                                                Zoho CRM コンテンツ



                                                                                                  Nederlandse Hulpbronnen


                                                                                                      ご検討中の方




                                                                                                              • Recent Topics

                                                                                                              • External lookup fields to synchronise with Analytics

                                                                                                                Hello. I suggest adding external lookup custom fields to the Zoho Analytics integration settings. Currently, these types of fields are not available for synchronisation, so they cannot be used to generate reports with related tables in Analytics. Thank
                                                                                                              • We should have an option to Toggle Off KB Article Links in AI Answer Bot Replies

                                                                                                                Hi everyone, I'm creating this topic to share a feature idea that I think would improve the customer experience when using the AI Answer Bot for self-service. The Current Behavior (The Problem) Currently, when the AI Answer Bot generates a summary or
                                                                                                              • Boot Loop After Removing Service from Client via Admin

                                                                                                                We have multiple laptops experiencing a boot loop / unable to login after the Zoho Remote service was removed from their machine remotely via the desktop client. The Windows sign-in screen is not available, and users are unable to login. This seems like
                                                                                                              • Request Backend Correction — Domains Mapped to Same Help Center (Multi-Brand Setup Failure)

                                                                                                                Hello Zoho Desk Support Team, I need assistance correcting a domain-to-brand mapping issue in our Zoho Desk instance (The Blue Ribbon Project). Both of our verified domains currently point to the same Help Center instead of separate brand portals. Current
                                                                                                              • is there any option to enable the participants interact - can write on the screen, while the screen is shared by the host?

                                                                                                                this is most expected features - for teaching children. is there any option to enable the participants interact - can write on the screen, while the screen is shared by the host?
                                                                                                              • How to disable the Login button in Desk Helpcenter

                                                                                                                Hey there, I'm testing out whether the help center within Zoho Desk could replace our existing Customer FAQ. I tried to customize the themes for the public help center frontend, but stumbled across the login button in the navigation bar. Is there any
                                                                                                              • stock movement report by each transaction for each item

                                                                                                                Dear Sir we are using zoho inventory for foodstuff and we lack the transaction report which clearly shows movement of an item from Opening balance of the month to Goods received in, Supplier return out, Invoice out, Sales return In, Transfer out and Transfer
                                                                                                              • Best way to display complex Bookings Consultation Descriptions on Zoho Site?

                                                                                                                I am a new user so apologies if this has been asked before. I couldn't find any answers in the forum. We offer 18 complex Consultations to our subscribers. Our current platform lets me put detail on these Consultations thoroughly (200-300 words) during
                                                                                                              • Gmail is ramping up its email sender policy as of November 2025

                                                                                                                Hello marketers, As you may be aware, Gmail introduced a guideline for bulk senders starting February 2024. If not, here's a quick refresher straight from Google: After this policy was announced first in 2023 and soft-implemented in February 2024, we
                                                                                                              • Modifying iframe data of Zoho booking iframe

                                                                                                                Hello, I have integrated a Zoho Bookings embedded iframe into my website. Currently, I am pre-filling the booking form with default values as part of our process flow. However, I want to ensure that if an input field is already populated with a default
                                                                                                              • Zoho CRM Workflow and Function Backup Options

                                                                                                                Hi everyone! I have been able to make several backups of my CRM data and noticed that the Workflows and Functions are not included in these backups. To my knowledge, there is no backup feature for workflows and functions, which is problematic in of itself.
                                                                                                              • Is or will be possible to associate meeting transcription and summary, made by Zia, to meeting/contact/account record in CRM?

                                                                                                                Would be useful to keep context and track jobs, better if it will be auto
                                                                                                              • Desk Field Not Showing in Analytics

                                                                                                                Hi there, I recently added a field to our Zoho Desk Ticket Information. I went and added the data retrospectively to the tickets. It is also marked as required, so all new tickets cannot be closed off without it being filled in. When I try to run a report
                                                                                                              • Export data using advanced export options and customizable settings

                                                                                                                Hello everyone, The user interface for exporting data has been revamped with updates to make data exports more flexible and efficient for users. These updates not only enhance usability but also bring advanced capabilities to help users extract precise
                                                                                                              • Moving data from one pipeline to another

                                                                                                                Hey all, I've got some complex pipelines to build and I'd like to seperate them into seperate pipelines rather than have one mammoth one. If I create 2 pipelines, is there any easy way to use the output of Pipeline1 to be the input into Pipeline2? Or
                                                                                                              • How to export/find all deluge code.

                                                                                                                Hi, I have a large app wich contains several forms, reports, html views, I need to find thow my application if any contains specific word, I could find it manually by editing app and see on every section(field code, on succes, on load, etc) but I would like to do it faster. Is there a way to at least export it to a file the whole deluge code on my application?
                                                                                                              • Have Some Bugs in Zoho CRM Ask Zia Assistant

                                                                                                                Hi Support Team, I have found some bugs in Zoho CRM Ask Zia Feature Please Check below screenshot, insight option is showing twice i think its in early access that's why its have some bugs .
                                                                                                              • COD with Partial payment

                                                                                                                Two reasons why we need COD with partial payment option. 1) Since we deal heavy weight products our shipping costs are too high. If shipment is rejected by customer we incur huge loss. 2) Some competitors place fake orders with different names and return
                                                                                                              • Slicers are now available in Zoho Sheet—filter your data interactively

                                                                                                                At Zoho Sheet, we diligently track user requests and feedback. In line with this, based on extensive user requests, we've integrated Slicers to pivot tables and are delighted to announce its release. Slicers are interactive visual filters that have add,
                                                                                                              • Resizing a Record Template Background Inage

                                                                                                                Hi everyone, I have an issue which I can't seem to resolve: Basically, I'm designing a record template in certificate form. I've specified A5 landscape. I've set my background image the same dimensions with total pixels at 443,520. Whatever I try, when
                                                                                                              • Updated font library: New font styles and custom font options in Zoho Sheet

                                                                                                                Zoho Sheet's font library now supports 500+ font styles in 60+ languages! The updated font library is stacked with new font styles, and some of the previously available font styles have been replaced with equivalent options. There are two ways you can
                                                                                                              • Introducing Data Bars: Graphically represent changes in data within the cells

                                                                                                                Conditional formatting has helped millions of spreadsheet users analyze and highlight their data more efficiently. In addition to the classic rules, color scales, and icon sets available in Zoho Sheet, you can now apply Data Bars, a convenient method
                                                                                                              • Default Font Size in Desk

                                                                                                                How do I set my default font size in Desk? It takes me about 45 minutes to find the place to set it, then, when I sign out of Zoho and log back in, it's back to font 10 again. Seems like this would be simple, but like everything with Zoho, it's buried
                                                                                                              • Tip #19 - Create checkbox tracker in your spreadsheet

                                                                                                                Hello Sheet users! We are here with yet another tip to help you get the most out of Zoho Sheet. Spreadsheets can be used to handle a variety of tasks, but ever tried using checkboxes to track the progress of your action items dynamically? Here's a sample
                                                                                                              • Tip #20 - Three things you probably didn't know you can do with picklists

                                                                                                                Hello Zoho Sheet users! We’re back with another quick tip to help you make your spreadsheets smarter. Picklists are a great tool to maintain consistency in your spreadsheet. Manually entering data is time-consuming and often leaves typos and irregular
                                                                                                              • Per Level Approval for admins

                                                                                                                We need Process admins like Zoho CRM in Zoho Books for per stage approval Currently in books, admins only have the option for Final Approval But for example, in cases like when an employee is on leave, we can't just approval one level we only have option
                                                                                                              • Feature enhancement: Highlight rows based on a cell value

                                                                                                                Hello Sheet users, We're excited to announce a new feature enhacement, shaped directly by your valuable feedback! As you might know, conditional formatting is a great tool for anyone dealing with large data sets. Previously, if you’ve ever wanted to draw
                                                                                                              • Updating custom fields in Zoho Projects

                                                                                                                Hi I am wondering if anyone has experience with custom fields in Zoho Projects. I am struggling to update the field using either deluge or the api endpoint. My code is: //custom_Map = map(); custom_Map = {"UDF_DOUBLE_1":"0.27"}; update_Map = map(); update_Map.put("custom_fields",custom_Map.toList());
                                                                                                              • Markdown for Desk?

                                                                                                                Hi, my company wants to use markdown for formatting text in Desk (in all modules there, especially Tickets and Helpcenter). Zoho already offers use of markdown in several products (see https://help.zoho.com/portal/en/kb/backstage/microsite-guide/formatting-with-markdown/articles/formatting-with-markdo)
                                                                                                              • Change Currency symbol

                                                                                                                I would like to change the way our currency displays when printed on quotes, invoices and purchase orders. Currently, we have Australian Dollars AUD as our Home Currency. The only two symbol choices available for this currency are "AU $" or "AUD". I would
                                                                                                              • Calendar not working

                                                                                                                Are we the only ones. On any browser we cannot click on any of our calendar appointments and get them to open. They just make the browser loop. WE have reached out and have been told they are working on it. The office staff are really stuck. The point
                                                                                                              • WhatsApp Message Template Quick Reply Buttons

                                                                                                                Hello, I created my first Message Template to overcome the 24-hr messaging window and it was approved by WhatsApp/Meta. When I go to Meta, I also see that template brought from Zoho Desk, and used it via Zoho Desk IM. However, I notice that when in Meta's
                                                                                                              • Account in Quick View Filter

                                                                                                                I have a report that I often run against a specific Account. Every time, I have to go into the edit menu and change the Advanced Filter. I would prefer to use the Quick View Filter, but it does not allow me to use the one and only field that makes any
                                                                                                              • Set Display for Numbers/Currency/etc with Client Script/Customization in Canvas List Page

                                                                                                                Is it possible to set a display mask for a number/currency field using Client Script or customization? I have custom fields that I would like to keep the decimal places for calculation purposes, but do not need them displayed to the user. So 101.3568
                                                                                                              • 136.143.188.51 blocked by spamcop

                                                                                                                Zoho mailserver seems to be blocked by spamcop. Cant send mail to my customer. Not sure what to do.
                                                                                                              • 🚀 WorkDrive 5.0: Evolving from a file sharing app to an intelligent content management platform: Phase 2

                                                                                                                Hello everyone, WorkDrive's primary focus has always been to provide an intelligent and secure content management platform, simplify collaboration, and be the central repository of files for all Zoho apps. In our previous announcement, we unveiled the
                                                                                                              • i keep see there is a connetion issue connecting 3rd party api on zoho when using zia

                                                                                                                hi there , i have set up open ai api to zoho zia (copied and pasted to zoho zia) but I keep getting notificaiton "there is a connetion issue connecting 3rd party api on zoho" when using zia on top when click zia and try to type in word there
                                                                                                              • Deleting Fields in CRM Deletes Views in Analytics

                                                                                                                Hey friends! I'm having some issues when we modify some fields within ZohoCRM. There are times where we need to sunset a field and eventually completely remove it. In these instances, it seems like a lot of views are removed in Analytics. This ranges
                                                                                                              • Zoho Desk Android and iOS app update: Access multilingual templates on the IM module

                                                                                                                Hello everyone! We have introduced multilingual templates on the IM module of the Zoho Desk mobile app allowing you to send IM template messages in translated versions. iOS: Android: Please update the app to the latest version directly from the App Store/
                                                                                                              • Does Zoho offer a full WhatsApp Marketing Platform (like WATI / GallaBox)?

                                                                                                                lm exploring WhatsApp marketing and I’d like to understand what options are available within the Zoho ecosystem. Currently, I see: Zoho SalesIQ has a broadcast option, but it seems very limited — for example, it doesn’t support uploading contacts via
                                                                                                              • Next Page