Kaizen #31 - Subforms #API

Kaizen #31 - Subforms #API

Hello everyone!
Welcome back to another post in the Kaizen series.
In this post, we will discuss the Subform APIs.

What is a Subform?
A subform is a secondary form or a table that enables you to include multiple line items into a primary form. Every line item is a subform record.
Your CRM data are often inter-dependent. Often, you may have the necessity to associate multiple items to a single record. In the technical lingo, we call these "line items".
Consider we have a Students module to store student records. Apart from the data like name, age, date of birth, email ID, courses opted for etc, we may want to have information such as the languages a student knows and the proficiency level in that language. So, Languages can be a subform in the Students module, and Language and Proficiency can be the two fields in that subform.
Therefore, every row in this subform that holds the language and the proficiency is a subform record or a line item.

Here is how the subform looks in a record in the Students module.


To know more about Subforms, refer to
Building Subforms.

Note
The Subform API is available only in the Enterprise and Ultimate editions of Zoho CRM.

Let us see how to insert, update, and delete these subform records through the APIs.

Subform APIs
  1. Insert Subform Records
  2. Update Subform Records
  3. Get a Subform
  4. Delete Subform Records

1. Insert Subform Records

You must use the Insert Subform Records API to insert records to a subform while inserting a record to a module.

Details Required: 
      a. API Name of the subform.
      b. API name of the subform fields.

a. API name of the subform
  1. Make a Get Modules API call. The response displays the details of all the available modules.
  2. Search for the module in which you have created the subform. In our case, it is Students.
  3. Look for the value of the key "generated_type" as "subform". 
  4. The value of the key "api_name" gives the API name of the subform. In our case, it is Languages.

b. API name of the subform fields
  1. Make a Get Fields Metadata API call to the subform module (crm/v2/settings/fields?module=Languages).
  2. Search for the field label. The value of the "api_name" key for the fields in the subform are the API names. Here, they are Proficiency and Language.
  3. Note down the "json_type" that represents the type of value the subform fields accept. Here, they are pick lists that accept string values.

To insert subform records:
Request URL: {{api-domain}}/crm/v2/Students
Request method: POST

Sample Input

{
    "data": [
        {
            "Name":"Allan John",
            "Languages1": [
                {
                    "Proficiency": "Native",
                    "Language": "English"
                },
                {
                    "Proficiency": "Professional",
                    "Language": "French"
                }
            ]
        }
    ]
}

Response:


Note
  • A module can have a maximum of two subforms for all editions except Ultimate. The Ultimate edition can have a maximum of five subforms.
  • Every module can have a maximum of 200 subform records with each subform having a maximum of 100 records.
  • A maximum of five aggregate custom fields are available for a subform.
Possible Errors
The "details" key in the response gives you an idea of where the error occurred. This key contains the API name of the field that has incorrect input and other necessary information in other keys.


HTTP Status and Error Code
"details" key
Reason for error
Handling
400 - INVALID_DATA
"details" : {
"api_name":"sub_form_api_name",
"expected_data_type":"jsonarray"
}
Invalid input for subform.

Construct proper subform data and send it in the request body.
400 - INVALID_DATA
"details" : {
"expected_data_type":"data_type",
 "api_name" : "name_of_field",
 "index" : "subform_array_index",
"parent_api_name":"subform_api_name"
}
You have input Invalid data type for the field.
Use parent_api_name, index, and api_name to identify the invalid field and use expected_data_type to construct a proper value.
400 - INVALID_DATA
"details" : {
 "api_name" : "subform_api_name",
 "info" : "Maximum of 100 records allowed"
}
A subform can only have a maximum of 100 records.
Do not associate further records to the mentioned subform.

2. Update Subform Records

Now that we have created a subform, every subform row is a record with a unique ID. 
Use the Update Subform Records API to update the subform record(s).

Let us now update the subform entries we just added to the Languages subform in the Students module.
The changes we are making are:
      a. Adding a subform entry for the Language "Spanish" with Proficiency as "Professional".
      b. Updating the Proficiency of the Language "French" to "Native".

Details required:
Record IDs of the subform records that you want to update. Make a Get Subform Data API call to the Student record you want to update the subform in.



The request to update the subform is
Request URL: {{api-domain}}/crm/v2/Students/3652397000002125005
Request method: PUT

Sample Input

{
    "data": [
        {
            "Languages": [
                {
                    "Proficiency": "Professional", //new subfrom record
                    "Language": "Spanish"
                },
                {
                    "id":"3652397000002125020",  //ID of the subform record that you want to update
                    "Proficiency": "Native",
                    "Language": "French"
                },
                {
                   "id":"3652397000002125019" //ID of the subform record that does not need any change
                }
            ]
        }
    ]
}

Response:



Note
  • You must specify the record IDs of the subform records you want to update and also the ones you do not want to update.
  • If you do not specify their IDs, the system deletes those records from the subform.

Possible Errors

HTTP Status and Error Code
"details" key
Reason for error
Handling
400 - INVALID_DATA
"details" : {
"api_name":"sub_form_api_name",
"expected_data_type":"jsonarray"
}
Invalid input for subform.
Construct proper subform data and send it in the request body.
400 - INVALID_DATA
"details" : {
"expected_data_type":"data_type",
 "api_name" : "name_of_field",
 "index" : "subform_array_index",
"parent_api_name":"subform_api_name"
}

You have input invalid data type for the field.
Use parent_api_name, index, and api_name to identify the invalid field and use expected_data_type to construct a proper value.
202- INVALID_DATA
Message: the id given seems to be invalid
1. Either the record ID or the subform record ID is invalid, (or)
2. User does not have the permission to the mentioned record.
1. Check the record ID sent in the API request URL or in the request body (or)
2. Check the subform record ID sent in the request body.

3. Get a Subform

You can use the Get Subform Data API to fetch the details of the subform of a record.
In the response, the key Parent_Id gives the name and ID of the record that the subform record is associated to.

Request URL: {{api-domain}}/crm/v2/Languages
Request method: GET

Response:



You can also get the subform details when you fetch a record from the module the subform is created in.

Request URL: {{api-domain}}/crm/v2/Students/3652397000002125005
Request method: GET

The response is as below.



4. Delete Subform Records

Simply make an Update Subform Records API call to the record whose subform record you want to delete.
Specify only the IDs of the subform records that you want to retain. The system deletes the other subform records whose IDs you have not specified.


We hope you found this post useful. Stay tuned for more!

Write to us at support@zohocrm.com if you have any questions, or let us know in the comment section.

Cheers!













    Access your files securely from anywhere

        All-in-one knowledge management and training platform for your employees and customers.






                              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 #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 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


                                                              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

                                                                                                                • system not picking my default custom service report template

                                                                                                                  Can you tell me why when we create a service report always pick the (standard old) template? Even when I have a custom service report selected as Default.
                                                                                                                • Restrict Appointment Booking to Approved Clients

                                                                                                                  Dear Zoho Bookings Support Team, We'd like to propose a feature enhancement for managing appointments within Zoho Bookings. This feature would ensure only pre-approved clients can schedule meetings. Desired Functionality: We propose the introduction of
                                                                                                                • Automate Credit Card Surcharge

                                                                                                                  Is there a way to create an automation that will add a 3.0% credit card surcharge to a subscription whenever a customer pays via credit card?
                                                                                                                • I have the item field and Quantity field in the sub form , on the submit of the form if the quantity is grater than inventory means show alert on submit validation only for item type goods ,

                                                                                                                  I have the item field and Quantity field in the sub form , on the submit of the form if the quantity is grater than inventory means show alert on submit validation . Stock Check Validation only for item type goods , not for item type service . For the
                                                                                                                • Disappearance of all articles in the knowledge base

                                                                                                                  Hi there! It seems like all of our articles have disappeared from the knowledge base: However, the names still appear in the "sort articles" section:
                                                                                                                • Logic for sending to a non-primary email address

                                                                                                                  Hi, I have a scenario where contacts are able to sign up for emails with 2 different email addresses (example: work, personal). I've mapped both to Campaigns from Zoho CRM, but when I go to target an email only the primary email addresses are pulling in. How can I update this to look at both of the email addresses - or specifically the secondary email address in Campaigns? Thanks, Jenny
                                                                                                                • Add "Reset MFA" Option for Zoho Creator Client Portal Users

                                                                                                                  Hello Zoho Creator Team, We hope you are doing well. We would like to request an important enhancement related to Multi-Factor Authentication (MFA) for client portal users in Zoho Creator. Currently, Creator allows us to enforce MFA for portal users,
                                                                                                                • Tables for Europe Datacenter customers?

                                                                                                                  It's been over a year now for the launch of Zoho Tables - and still not available für EU DC customers. When will it be available?
                                                                                                                • NOTAS INVISIBLES

                                                                                                                  Siempre que abro mis notas salen invisibles, muchas no resaltan las *negritas* en la vista previa hasta que te metes en ellas y modificas algo. Pero omg con el equipo de Zoho. Les dije que las usaba mucho precisamente por la VISTA PREVIA y encontrar las
                                                                                                                • Does Zoho has chatroom/chatbot url feature?

                                                                                                                  Hi Zoho community! I’m looking for a quick "Yes/No" answer for my dev team regarding Zoho’s capabilities. We currently use Zoho Desk for our Service Team and Zoho CRM for our Marketing Team to bring both functions under one platform. Our question: Does
                                                                                                                • One Support Email Managed By Multiple Departments

                                                                                                                  Hello, We use one support email (support@company.com). Incoming emails come to the "Support Department" and based on what the customer is asking, we route that ticket to different departments (billing, technical support, etc.). When users in these different
                                                                                                                • What's New in Zoho Analytics - February 2026

                                                                                                                  Hello Users! We're back with another round of updates for Zoho Analytics. This month's release focuses on giving you greater flexibility in how you visualize, manage, and act on your data - with new features like custom visualizations, remote MCP server,
                                                                                                                • Is it Possible to Modify Standard Report Urls

                                                                                                                  Is there a way to permanently modify standard report Urls? Use case: Suppose I have a Products report. Showing list as timeline, calendar, or kanban doesn't make sense. Want to hide that from users by adding #Report:Products?zc_ShowAs=false&zc_Print=false
                                                                                                                • 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
                                                                                                                • scope for phonebridge in CRM and phonebridge API documentation

                                                                                                                  Hi I cannot find the scope to be used for phonebridge in CRM API V2 calls. I am getting OAUTH_SCOPE_MISMATCH for scope group ZohoCRM.modules.ALL,ZohoCRM.setttings.ALL Also I am not able to locate the documentation for the same, All I have is phonebridge
                                                                                                                • Job Alerts for Candidates

                                                                                                                  hi All, I have 2 questions relating to sharing job details with candidates. 1. is there a way to notify candidates that meet certain criteria of current jobs available? eg. I run a candidate search, and identify 50 candidates that might be suitable. Can
                                                                                                                • Zoho Wiki or new Zoho Learn

                                                                                                                  We are currently evaluating if we should move off confluence. At present in Confluence we have multiple levels within our documentation but with learn it looks like you can only have Space       - Manual             - Chapter Is it possible to have levels below Chapter? Also the same question for the existing wiki, can I have more sub-levels?
                                                                                                                • Fix image at bottom of a page fot automatic proposal creation

                                                                                                                  I'm working on a proposal document to automate our proposal creation process. So far it works fine, but I experience some problems with an image I want to have fixed at the bottom of the page AND above the footer. This section of the document consists
                                                                                                                • Can't scroll the page down unless I refresh the page

                                                                                                                  Hello, This issue has been going on with me and a lot of other users in my organization, we can't scroll down! the scrolling side bar doesn't appear and scrolling down through mouse or keyboard keys doesn't work, it seems that the page just ends in the
                                                                                                                • Price List

                                                                                                                  II want to restrict the items to display in sales, quote, etc for which custom rates are added in price list. How I can do the same in Zoho books
                                                                                                                • Let’s Talk Recruit: Still switching tabs to source?

                                                                                                                  Welcome back to the Let’s Talk Recruit series. Let’s talk about how you actually source talent. Do you open multiple job boards every single time a role opens? Run the same keyword searches you ran yesterday? Download, upload, rename, and then do it again
                                                                                                                • Kaizen #231 - Embedding Zoho Desk Tickets in Zoho CRM

                                                                                                                  Hello, CRM Wizards! This week, let us enhance cross-team visibility between Zoho CRM and Zoho Desk. We will use the Zoho Request Client inside a Related List widget to display open Zoho Desk tickets directly within the Contact record in Zoho CRM. This
                                                                                                                • Introducing a smarter, faster, and more flexible charting experience

                                                                                                                  Hello Zoho Sheet users, We're delighted to share the latest news about a major update to charts in Zoho Sheet! The new version supports dynamic data ranges, granular styling options, faster loading, and other interesting enhancements that allow you to
                                                                                                                • Introducing Job Alerts

                                                                                                                  Keeping candidates engaged beyond their first application is one of the most consistent hiring challenges. Many interested candidates simply do not revisit career sites regularly, which can result in missed opportunities and reduced re-applications. To
                                                                                                                • Task status - completed - other options

                                                                                                                  I have a dumb question I know i can make custom statuses for the tasks - but is there anyway to make additional "completed" statuses like for instance if i have a task "call back customer" and i leave a vm for them to call back marking it "completed -
                                                                                                                • Bank feed integration First Abu Dhabi Bank (FAB) to Zoho? (UAE)

                                                                                                                  Hello everyone, Is First Abu Dhabi Bank in the list of banks available for bank feed integration with Zoho Books? Thank you.
                                                                                                                • How to Export Filtered List of Contacts?

                                                                                                                  This seems like it should be simple, but I'm stymied. I'm trying to export a filtered list of my Contacts for analysis in a spreadsheet. The use case is that I'm an ecom business based in the US. The bulk of our customers are individuals stored as Contacts.
                                                                                                                • Quick Create needs Client Script support

                                                                                                                  As per the title. We need client scripts to apply at a Quick Create level. We enforce logic on the form to ensure data quality, automate field values, etc. However, all this is lost when a user attempts a "Quick Create". It is disappointing because, from
                                                                                                                • can we add product images in Zoho CRM Quote PDF template?

                                                                                                                  I want to create a quotation format in Zoho CRM similar to the attached PDF, where each product is displayed in a table with rpoduct image I need the product image to appear inside the line items section of the quote. However, while checking the Quote
                                                                                                                • Does Zoho Writer have Dropdowns

                                                                                                                  I want to add a drop down field in Zoho writer. Is this possible?
                                                                                                                • Facturation électronique 2026 - obligation dès le 1er septembre 2026

                                                                                                                  Bonjour, Je me permets de réagir à divers posts publiés ici et là concernant le projet de E-Invoicing, dans le cadre de la facturation électronique prévue très prochainement. Dans le cadre du passage à la facturation électronique pour les entreprises,
                                                                                                                • Users Lookup

                                                                                                                  It would be extremely convenient to have a lookup field whose type is Users. There are many instances where we need to relate certain actions to users. Furthermore, in our company the candidate sourcer might not be the one who's creating the profile (done by an admin). Please do consider adding this essential feature in the future. Thank you
                                                                                                                • Connecting Multiple WooCommerce Stores to a Single Zoho Marketing Automation Account

                                                                                                                  Is it possible to connect multiple WooCommerce stores to a single Zoho Marketing Automation account?
                                                                                                                • Service Title in Service Report Template Builder

                                                                                                                  I am currently working on the Service Report Template Builder in Zoho FSM. I have created three separate service report templates for different workflows: Preventive Maintenance Report Requested Service Report Installation Report My issue is that I cannot
                                                                                                                • Update: New Security Admin Role

                                                                                                                  Hello Zoho Directory Admins! This post is to highlight the recent role and permission changes introduced as part of the security enhancements. Previously, Helpdesk Admins had the security permissions and were responsible for managing the security configurations
                                                                                                                • Client Script | Update #14 - Client Script Support for Quick Create

                                                                                                                  Hello Everyone! We are back with another exciting and highly awaited update in Client Script! Over the past months, many of you shared your insights and requests, asking for the power to extend Client Script functionality to Quick Create forms. This capability
                                                                                                                • I'd like to suggest a feature enhancement for SalesIQ that would greatly improve the user experience across different channels.

                                                                                                                  Hello Zoho Team, Current Limitation: When I enable the pre-chat form under Brands > Flow Controls to collect the visitor’s name and email, it gets applied globally across all channels, including WhatsApp, Messenger, and Instagram. This doesn't quite align
                                                                                                                • The Social Playbook - February edition: Why moment marketing works (and how brands use it)

                                                                                                                  Imagine the final season of your favorite series is about to drop. Your entire feed is talking about it. Trailers everywhere. Fan theories. Hype at 100%. Now your go-to burger place launches a limited-edition meal box themed around that series—custom
                                                                                                                • PDF Attachment Option for Service Reports

                                                                                                                  Hello Team, I would like to check with you all if there is an option to attach PDF documents to the service reports. When I try to attach a file, the system only allows the following formats: JPEG, JPG, and PNG. Could you please confirm whether PDF attachments
                                                                                                                • Cliq Bots - Post message to a bot using the command line!

                                                                                                                  If you had read our post on how to post a message to a channel in a simple one-line command, then this sure is a piece of cake for you guys! For those of you, who are reading this for the first time, don't worry! Just read on. This post is all about how
                                                                                                                • Next Page