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:
- Prepare your CSV file
- Upload your file in zip format
- Create a bulk write job
- Check the job status
- 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 | 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
Centralize Knowledge. Transform Learning.
All-in-one knowledge management and training platform for your employees and customers.
New to Zoho Recruit?
Zoho Developer Community
New to Zoho LandingPage?
Zoho LandingPage Resources
New to Zoho Survey?
New to Zoho CRM Plus?
Deliver unforgettable customer experiences
New to Zoho CRM Plus?
Deliver unforgettable customer experiences
New to Zoho Marketing Plus?
Everything you need to run your marketing
New to Zoho Marketing Plus?
Everything you need to run your marketing
New to Bigin?
Topic Participants
Anu Abraham
Sticky Posts
Kaizen #198: Using Client Script for Custom Validation in Blueprint
Nearing 200th Kaizen Post – 1 More to the Big Two-Oh-Oh! Do you have any questions, suggestions, or topics you would like us to cover in future posts? Your insights and suggestions help us shape future content and make this series better for everyone.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 thisKaizen #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 howKaizen #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
New to Zoho TeamInbox?
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
Design. Discuss. Deliver.
Zoho Show Resources
Get Started. Write Away!
Writer is a powerful online word processor, designed for collaborative work.
Zoho CRM コンテンツ
-
オンラインヘルプ
-
Webセミナー
-
機能活用動画
-
よくある質問
-
Ebook
-
-
Zoho Campaigns
- Zoho サービスのWebセミナー
その他のサービス コンテンツ
Nederlandse Hulpbronnen
ご検討中の方
Recent Topics
Is there a way to delete workspaces?
I want to remove one of the workspaces in my Campaigns account. I don't see any obvious way to do this. Am I missing something?Boost your Zoho Desk's performance by archiving tickets!
The longer your help desk operations are, the more likely it is to accumulate tickets that are no longer relevant. For example, ticket records from a year ago are typically less relevant than currently open tickets. Such old tickets may eventually leadCollapsing and expanding of lists and paragraphs
hello Would you ever implement Collapsing and expanding of lists and paragraphs in zoho writer ? Best regardsNew Custom View -Sorting the Custom fields
While creating a New Custom View in invoice , Customers, Bills ,expense etc , the sorting of custom fields are not available , a query function "order by / sort by " may also be included in Define new criteria module which will be more beneficial toMake CAMPAIGNS email look as simple as possible
Hi there I'm trying to make my Campaigns email look as much like a normal email as possible. I'm a bit stuck with the "justification" of the email email block. Can I LEFT JUSTIFY the "whole email" to make it look "normal"? (Please see screenshot attached)[Webinar] Top 10 Most Used Zoho Analytics Features in 2025
Zoho Analytics has evolved significantly over the past year. Discover the most widely adopted features in Zoho Analytics in 2025, based on real customer usage patterns, best practices, and high-impact use cases. Learn how leading teams are turning dataSorry! we encountered some problems while sending your campaign. It will be sent automatically once we are ready. We apologize for the delay caused.
Hello. Lately we are having problems with some campaigns, which show us this error message. Sorry! we encountered some problems while sending your campaign. It will be sent automatically once we are ready. We apologize for the delay caused. We can't findCan I remove or divert certain contacts from an active Campaigns workflow?
I have created a workflow in Zoho Campaigns, which sends different emails, once contacts have been added to a mailing list. To choose which email to send to the contacts, there are conditions, which divert contacts based on their company type and their company size. There was a subsection of this workflow, where company size wasn't selected correctly, and some contacts have been sent down the wrong path and received the wrong email. The workflow contains a reminder loop and a further series of emails.Customizing Helpcenter texts
I’m customizing the Zoho Desk Help Center and I’d like to change the wording of the standard widgets – for example, the text in the “Submit Ticket” banner that appears in the footer, or other built-in widget labels and messages. So far, I haven’t foundFile Upload field automatically replaces spaces with underscores – support experience
Hi everyone, I want to share my recent experience regarding the File Upload field behavior in Zoho Creator and my interaction with the Zoho support team. When a user uploads a file, the system automatically renames the document by replacing spaces inHow to map fields from Zoho Recruit to Zoho People
I've got these fields from my Job Offer that I'm trying to map to the Work information fields in Zoho People, but they arent showing up. For example, how do I get the department name field (in the job post) to map to the work information field in ZohoUTM in zoho campaigns
Helloo everybody!!! Someone know how IF ZOHO CAMPAIGNS has UTM for tracking the url of any campaigns. thank uFull Context of Zoho CRM Records for Zia in Zoho Desk for efficient AI Usage
Hello everyone, I have a question regarding the use of Zia in Zoho Desk in combination with CRM data. Is it possible to automatically feed the complete context of a CRM record into Zia, so that it can generate automated and highly accurate responses forKnowledge base printing
I saw a posting about printing the knowledge base as I was looking for the answer, but we would like the ability to print out the entire knowledge base with a click, keeping the same organization format. Bonus would include an index of keywords andSearch not working!
I have items in my notebook tagged but when I search for a tag nothing comes up! Any fix for this?Zoho Books | Product updates | January 2026
Hello users, We’ve rolled out new features and enhancements in Zoho Books. From e-filing Form 1099 directly with the IRS to corporation tax support, explore the updates designed to enhance your bookkeeping experience. E-File Form 1099 Directly With theUpdates for Zoho Campaigns: Merge tag, footer, and autoresponder migration
Hello everyone, We'd like to inform you of some upcoming changes with regard to Zoho Campaigns. We understand that change can be difficult, but we're dedicated to ensuring a smooth transition while keeping you all informed and engaged throughout the process.File Upload field not showing in workflow
Hi, I have added a field on Zoho CRM. I want to use it in a workflow where that particular field is updated based on another field, however it is not showing up in the field list to select it in the workflow. Why is this please?Drag 'n' Drop Fields to a Sub-Form and "Move Field To" Option
Hi, I would like to be able to move fields from the Main Page to a Sub-Form or from a Sub-Form to either the Main Page or another Sub-Form. Today if you change the design you have to delete and recreate every field, not just move them. Would be nice toHow do i integrate google analytics to Zoho Campaigns?
Looking to track Zoho Traffic from email Current topic is outdatedHow do teams manage meeting follow-ups across Zoho tools?
We’re using Zoho tools for collaboration and tracking, but managing meeting notes, action items, and follow-ups across teams is still challenging. Curious how others are handling this within Zoho workflows. Are there best practices or integrations thatAdding a Deal to and Existing Contact
I want to easily add a Deal to an existing Contact. If I click on New Deal on the Contact page this currently this is what happens: All of the mandatory field (and other field) information exists within the Contact. Is there a simple way for it to automaticallyZoho Sprint Backlog View, filter by item status
Hello, In Zoho Sprints, it would be great to be able filter out specific items in the Backlog based on their status. We would like to track items that were Removed from our backlog without seeing them constantly in the Backlog view, as this view shouldCustomize Colors used on graphs and charts according to users desire.
It would be great if we could customize the graph's colors as we see fit. I hate that yellow is always the default color!Let us view and export the full price books data from CRM
I quote out of CRM, some of my clients have specialised pricing for specific products - therefore we use Price Books to manage these special prices. I can only see the breakdown of the products listed in the price book and the specialised pricing forMejoras urgentes para ZOHO MEETING
Tengo unos meses usando Zoho Meeting. En general, es buena, pero hay cosas vitales que no logra cumplir con mínima calidad. 1) Calidad de audio y video: urge mejoras. Audio con retraso, imagen borrosa, mal recorte de silueta con fondos virtuales. Además,Multiple header in the quote table???
Hello, Is it possible in Zoho CRM to add multiple headers or sections within the Quote product table, so that when the quote is printed it shows separate sections (for example “Products” and “Services”)? To clarify, I’m asking because: This does not appearSaving sent email campaign as PDF
I'm looking to add all campaigns sent to an archive folder in sharepoint. Is there anyway to accomplish this in Zoho Flow ? I'm falling at the first hurdle ... can I automatically save a sent campaign as a PDF to a folder location ?Exporting All Custom Functions in ZohoCRM
Hello, All I've been looking for a way to keep about 30 functions that I have written in Zoho CRM updated in my own repository to use elsewhere in other instances. A github integration would be great, but a way to export all custom functions or any wayHow can Data Enrichment be automatically triggered when a new Lead is created in Zoho CRM?
Hi, I have a pipeline where a Lead is created automatically through the Zoho API and I've been trying to look for a way to automatically apply Data Enrichment on this created lead. 1) I did not find any way to do this through the Zoho API; it seems likeConditional Layouts On Multi Select Field
How we can use Conditional Layouts On Multi Select Field field? Please help.Appreciation to Qntrl Support Team
We are writing this topic to appreciate the outstanding level of support from Qntrl Team. We have been using Qntrl since 2022 after shifting from another similar platform. Since we joined Qntrl, the team has shown a high level of professionalism, support,How can I hide "My Requests" and "Marketplace" icon from the side menu
Hello everybody, We recently started using the new Zoho CRM for Everyone. How can I hide "My Requests" and "Marketplace" from the side menu? We don't use these features at the moment, and I couldn't find a way to disable or remove them. Best regards,Whatsapp Integration on Zoho Campaign
Team: Can the messages from Zoho Campaign delivered through Whatsapp... now customers no longer are active on email, but the entire campaign module is email based.... when will it be available on whatsapp.... are there any thirdparty providers who canQuotes Approval
Hey all, Could you please help in the following: When creating quotes, how to configure it in a way, that its approval would work according to the quoted items description, not according to quote information. In my case, the quote should be sent to approvalMandatory Field - but only at conversion
Hello! We use Zoho CRM and there are times where the "Lead Created Date & Time" field isn't populated into a "Contractor" (Account is the default phrase i believe). Most of my lead tracking is based on reading the Lead Created field above, so it's importantDifferent Task Layouts for Subtasks
I was wondering how it would be possible for a subtask to have a different task layout to the parent task.Enable Free External Collaboration on Notecards in Zoho Notebook
Hi Zoho Notebook Team, I would like to suggest a feature enhancement regarding external collaboration in Zoho Notebook. Currently, we can share notes with external users, and they are able to view the content without any issue. However, when these externalUsing data fields in Zoho Show presentations to extract key numbers from Zia insights based on a report created
Is it possible to use data fields in Zoho Show presentations along with Zoho Analytics to extract key numbers from Zia insights based on a report created? For example, using this text below: (note that the numbers in bold would be from Zia Insights) RevenueFree webinar: AI-powered agreement management with Zoho Sign
Hi there! Does preparing an agreement feel like more work than actually signing it? You're definitely not alone. Between drafting the document, managing revisions, securing internal approvals, and rereading clauses to make sure everything still reflectsNext Page