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







                            Zoho Developer Community





                                                  Use cases

                                                  Make the most of Zoho Desk with the use cases.

                                                   
                                                    

                                                  eBooks

                                                  Download free eBooks and access a range of topics to get deeper insight on successfully using Zoho Desk.

                                                   
                                                    

                                                  Videos

                                                  Watch comprehensive videos on features and other important topics that will help you master Zoho Desk.

                                                   
                                                    

                                                  Webinar

                                                  Sign up for our webinars and learn the Zoho Desk basics, from customization to automation and more

                                                   
                                                    
                                                  • Desk Community Learning Series


                                                  • Meetups


                                                  • Ask the Experts


                                                  • Kbase


                                                  • Resources


                                                  • Glossary


                                                  • Desk Marketplace


                                                  • MVP Corner




                                                            • Sticky Posts

                                                            • Kaizen #197: Frequently Asked Questions on GraphQL APIs

                                                              🎊 Nearing 200th Kaizen Post – We want to hear from you! 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 #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.
                                                            • Celebrating 200 posts of Kaizen! Share your ideas for the milestone post

                                                              Hello Developers, We launched the Kaizen series in 2019 to share helpful content to support your Zoho CRM development journey. Staying true to its spirit—Kaizen Series: Continuous Improvement for Developer Experience—we've shared everything from FAQs
                                                            • Kaizen #193: Creating different fields in Zoho CRM through API

                                                              🎊 Nearing 200th Kaizen Post – We want to hear from you! 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.
                                                            • Client Script | Update - Introducing Commands in Client Script!

                                                              Have you ever wished you could trigger Client Script from contexts other than just the supported pages and events? Have you ever wanted to leverage the advantage of Client Script at your finger tip? Discover the power of Client Script - Commands! Commands


                                                            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 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

                                                                                                            • Zoho Sign and Zoho Workdrive Integration

                                                                                                              Hello, there. I want to know if it's possible to save a signed document from Zoho Sign in an specific folder for each signer in Zoho Workdrive.  For example: If John Doe signs the document in Zoho Sign I want to save it automatically in a folder named
                                                                                                            • Office 365 and CRM mail integration: permission required

                                                                                                              Has anyone run into this weird problem? My email server is Office 365. When I try to configure Zoho CRM to use this server, a Microsoft popup window opens requesting user and password. After entering that, I get a message in the Microsoft window saying
                                                                                                            • Empowered Custom Views: Cross-Module Criteria Now Supported in Zoho CRM

                                                                                                              Hello everyone, We’re excited to introduce cross-module criteria support in custom views! Custom views provide personalized perspectives on your data and that you can save for future use. You can share these views with all users or specific individuals
                                                                                                            • How do you list multiple contacts for a lead?

                                                                                                              My sales team wants to be able to add additional contacts for leads, how do we do that? Is there a different way we should be using the lead / contact functionality? Moderation update (9th September 2025): Our developers have built an extension to achieve
                                                                                                            • Modifying Three Dot Menu Options

                                                                                                              Is there a way to modify the three dot menu options that display in a Report header? They currently display: Show As (List, Calendar, Timeline), Print, Import, Export. I'd like to remove the Show As and Print options, since they aren't applicable for
                                                                                                            • Field Not Updating in FSM Script - Service and Parts module.

                                                                                                              Dear Team, I am reaching out regarding a script I have implemented in Zoho FSM to automate the calculation of the End of Service date based on the End of Sale date in the Service and Parts module. Overview of the script: Fetches the End_of_Sale__C and
                                                                                                            • Zadarma + Zoho CRM Integration – Missed Calls Saved as Contacts Instead of Leads

                                                                                                              Hello everyone, I’m looking for input from anyone with experience using the Zadarma + Zoho CRM integration. Currently, I’m seeing that missed calls are automatically being created as Contacts instead of Leads. From a CRM perspective, this doesn’t make
                                                                                                            • Zoho Books | Product updates | September 2025

                                                                                                              Hello users, We’ve rolled out new features and enhancements in Zoho Books. From PayNow payment method to applying journal credits to invoices and bills in other locations, explore the updates designed to enhance your bookkeeping experience. Integrate
                                                                                                            • How to update Multiple Users field in Quote Module from Deal Module

                                                                                                              Scenario : Deal Module having Multiple User Field (Presales Engineer) which having more than 1 User and through Deluge Script I need to get that Users Details and need to put into Multiple User Field (Presales Engineer) of Quote Module. Note: Both Module
                                                                                                            • Auto-sync field of lookup value

                                                                                                              This feature has been requested many times in the discussion Field of Lookup Announcement and this post aims to track it separately. At the moment the value of a 'field of lookup' is a snapshot but once the parent lookup field is updated the values diverge.
                                                                                                            • Clone a Module??

                                                                                                              I am giong to repurpose the Vendors module but would like to have a separate but very similar module for another group of contacts called Buyers. I have already repurposed Contacts to Sellers. Is it possible to clone (make a duplicate) module of Vendors
                                                                                                            • Advance PDF creation from CRM data

                                                                                                              I'm trying to create a PDF export of data in the CRM. My problem is I want a pretty complicated format for the data. I'm trying to export multiple modules worth of data, with nested one-to-many relationships between the modules. Along with that, I want
                                                                                                            • how to disable staff selection Zoho Booking integrated to SalesIQ?

                                                                                                              currently there is only one Consultant in my Zoho Bookings like this I integrate Zoho Bookings into Zoho SalesIQ to create a chatbot. Unfortunately, even though I only have one consultant for a consultation, the user have to pick the consultant. It will
                                                                                                            • How to change the text in WhatsApp Zobot integrated to Zoho Booking?

                                                                                                              I have integrated Zoho Bookings into Zoho SalesIQ, I want to change the text in WhatsApp when creating a booking in Zobot how to change those text?
                                                                                                            • Updating Subform Record from other Form

                                                                                                              Just wanted to ask how to properly approach this. I have 2 forms and would like to trigger an auto update on the subform once record submitted. block below only updates 1 row for each recordRow in input.AV_System { AssetRecord = Site_Asset_Services[SOR_No
                                                                                                            • when I email a invoice how can i see it was sent and also were i can go to see all emails sent

                                                                                                              when I email a invoice how can i see it was sent and also were i can go to see all emails sent?
                                                                                                            • Zoho Books - Hide Convert to Sales Order if it can't be used.

                                                                                                              Hi Books team, I noticed that it is not possible to convert a Quote to a Sales Order when a Quote is not yet marked as accepted. My idea is to not show the Convert to Sales Order button when it is not possible to use it, or show it in a grey inactive
                                                                                                            • How do I bulk archive my projects in ZOHO projects

                                                                                                              Hi, I want to archive 50 Projects in one go. Can you please help me out , How can I do this? Thanks kapil
                                                                                                            • Cross-Data Center Collaboration and / Or allowing users to choose DC

                                                                                                              Dear Zoho Cliq Support Team, We are writing to request a significant enhancement to Zoho Cliq that would greatly benefit our geographically dispersed development team. Current Challenge: Currently, Zoho Cliq automatically routes users to specific data
                                                                                                            • Zoho Flow - Update record in Trackvia

                                                                                                              Hello, I have a Flow that executes correctly but I only want it to execute once when a particular field on a record is updated in TrackVia. I have the trigger filters setup correctly and I want to add an "update record" action at the end of the flow to
                                                                                                            • New Mandatory One-Click Unsubscribe Link Overshadowing Custom Unsubscribe Link

                                                                                                              I was recently informed by Zoho CRM Support that they are now mandated by the large email service providers like Google and Yahoo to provide a one-click unsubscribe option in the header (not the body) of all mass emails. I have a custom unsubscribe link
                                                                                                            • Send / Send & Close keyboard shortcuts

                                                                                                              Hello! My team is so close to using Zoho Desk with just the keyboard. Keyboard shortcuts really help us to be more efficient -- saving a second or two over thousands of tickets adds up quickly. It seems like the keyboard shortcuts in Desk are only for
                                                                                                            • Is it possible to register webhooks in Zoho CRM using API?

                                                                                                              Hello, I am trying to register a webhook in Zoho CRM programmatically (using the API). Specifically, I want to register a webhook that is fired when new Contacts are created in the CRM. I was able to setup a webhook using the UI, by creating a rule that
                                                                                                            • Calls where the local audio is shared, have echo

                                                                                                              When another user is sharing their screen with audio, I get echo from my own voice. We tested this with multiple users, with different audio setups, and there's no obvious way to fix it. Is this a bug you could look into, or are we missing something?
                                                                                                            • Systematic SPF alignment issues with Zoho subdomains

                                                                                                              Analysis Period: August 19 - September 1, 2025 PROBLEM SUMMARY Multiple Zoho services are causing systematic SPF authentication failures in DMARC reports from major email providers (Google, Microsoft, Zoho). While emails are successfully delivered due
                                                                                                            • No practical examples of how survey data is analyzed

                                                                                                              There are no examples of analysis with analytics of zoho survey data. Only survey meta data is analyzed, such as number of completes, not actual analysis of responses, such as the % in each gender, cross-tabulations of survey responses. One strange characteristic of Zoho analytics is that does not seem aware of how Zoho Survey codes 'multiple response' questions. These are questions where more than one option can be selected from a list. Zoho Survey stores this data as text, separated by commas within
                                                                                                            • Update application by uploading an updated DS file

                                                                                                              Is it possible? I have been working with AI on my desktop improving my application, and I have to keep copy pasting stuff... Would it be possible to import the DS file on top of an existing application to update the app accordingly?
                                                                                                            • Markdown support, code cells...

                                                                                                              Hi Zoho I'd like to vote for a feature that markdown is supported with: Headings Code highlighting Quoteblocks ... Furthermore a inline card(like inline sketch card) for special text like Code would be great. And just to add my vote as well for "Tags"!
                                                                                                            • Minimise chat when user navigates to new page

                                                                                                              When the user is in an active chat (chatbot) and is provide with an internal link, when they click the link to go to the internal page the chat opens again. This is not a good user experience. They have been sent the link to read what is on the page.
                                                                                                            • How do I fix this? Unable to send message; Reason:554 5.1.8 Email Outgoing Blocked.

                                                                                                              How do I fix this? Unable to send message; Reason:554 5.1.8 Email Outgoing Blocked.
                                                                                                            • Reports: Custom Search Function Fields

                                                                                                              Hi Zoho, Hope you'll add this into your roadmap. Issue: For the past 2yrs our global team been complaining and was brought to our attention recently that it's a time consuming process looking/scrolling down. Use-case: This form is a service report with
                                                                                                            • Zoho Projects app update: Voice notes for Tasks and Bugs module

                                                                                                              Hello everyone! In the latest version(v3.9.37) of the Zoho Projects Android app update, we have introduced voice notes for the Tasks and Bugs module. The voice notes can be added as an attachment or can be transcribed into text. Recording and attaching
                                                                                                            • zurl URL shortener Not working in Zoho social

                                                                                                              zurl URL shortener Not working in while creating a post in Zoho social
                                                                                                            • In the Zoho CRM Module I have TRN Field I should contain 15 digit Number , If it Contain less than 15 digit Then show Alert message on save of the button , If it not contain any number not want to sh

                                                                                                              Hi In the Zoho CRM Module I have TRN Field I should contain 15 digit Number , If it Contain less than 15 digit Then show Alert message on save of the button , If it not contain any number not want to show alert. How We can achive in Zoho CRm Using custom
                                                                                                            • Power of Automation::Streamline log hours to work hours upon task completion.

                                                                                                              Hello Everyone, A Custom Function is a user-written set of code to achieve a specific requirement. Set the required conditions needed as to when to trigger using the Workflow rules (be it Tasks / Project) and associate the custom function to it. Requirement:-
                                                                                                            • Zoho Bookings know-how: A hands-on workshop series

                                                                                                              Hello! We’re conducting a hands-on workshop series to help simplify appointment scheduling for your business with Zoho Bookings. We’ll be covering various functionalities and showing how you can leverage them for your business across five different sessions.
                                                                                                            • Custom report

                                                                                                              Hello Everyone I hope everything is fine. I've tried to To change the layout of the reports, especially the summary page report, and I want to divide summary of each section in the survey but I can't For example: I have a survey containing five different
                                                                                                            • Zoho Journey - ZOHO MARKETING AUTOMATION

                                                                                                              I’ve encountered an issue while working with a journey in Zoho Marketing Automation. After creating the journey, I wanted to edit the "Match Criteria" settings. Unfortunately: The criteria section appears to be locked and not editable. I’m also unable
                                                                                                            • Custom Fields in PDF outputs

                                                                                                              I created a couple of custom fields. e.g Country of Origin and HS Tariff Code. I need these to appear on a clone of a sales order PDF template but on on the standard PDF template. When I select "appear on PDFs' it appears on both but when I don't select
                                                                                                            • How to create a Service Agreement with Quarterly Estimate

                                                                                                              Hello, I'm not sure if this has been asked before so please don't get mad at me for asking. We're an NDIS provider in Australia so we need to draft a Service Agreement for our client. With the recent changes in the NDIS we're now required to also include
                                                                                                            • Next Page