Kaizen #125 Manipulating Multi-Select Lookup fields (MxN) using Zoho CRM APIs

Kaizen #125 Manipulating Multi-Select Lookup fields (MxN) using Zoho CRM APIs

Hello everyone!
Welcome back to another week of Kaizen. In last week's post in the Kaizen series, we discussed how subforms work in Zoho CRM and how to manipulate subform data using Zoho CRM APIs.
In this post, we will discuss how to manipulate a multi-select lookup fields using Zoho CRM APIs.

Multi-select lookup field

The Multi-Select Lookup Field enables you to establish a many-to-many relationship between two different modules in CRM. It allows you to associate multiple records with each other, from two different modules. 
These associations are stored in an individual module called "Linking Module". Consider there are two modules, Employees and Skills. The Employees module contains details regarding Zylker's workforce, and the Skills module contains details regarding various skills like Social Media Marketing and Content Marketing.
We want to associate multiple skills to an employee. So, a multi-select lookup can be created in the Employees module. When doing so, similar multi-select lookup field will be automatically created in the Skills module, along with the EmpXSkills linking module by Zoho CRM. The underlying data model is described in the below image.
The above chart shows the data model representation when you create a multi-select lookup field in a module. Here, there are two lookup fields—one pointing to the Employees module and the other pointing to the Skills module.
In the linking module, two lookup fields (lookup fields with api names - Employees and Skills) will be created. The lookup fields, one pointing to Employees and the other pointing to Skills from the linking module, establish a connection between the linking module and its associated module.

How to associate an employee's skills while creating an Employee record through the Insert Records API

API names you need before invoking the API
  • The API name of the multi-select lookup field in the modules you want to insert data.
  • API names of the lookup fields in the linking module. Eg: here the API Name of the linking module is "EmpXSkills" and the corresponding lookup field api names are "Employees" & "Skills". You can use the Fields Metadata API for Employees and Skills to get these details.
Step 1
Know the API name of the multi-select lookup field in the module (In our case, Skills is the multi-select lookup field in the Employees module)

To know the API names of the multi-select lookup fields, make a GET - Fields Metadata API call. Among all the Employee's fields, multi-select lookup field can be identified by the json key data_type with the value multiselectlookup. The corresponding connected module can be found from the json connected_module. Below is the API call & response for such a multi-select lookup field.

Request URL : {api-domain}/crm/v6/settings/fields?module=Employees
Request Method: GET

Sample Response: 

The above highlighted keys are the details of the Multi select lookup field. The corresponding keys are explained below:

"multiselectlookup": {
                "display_label": "Skills",   //Display label of the MxN field in the Employees module
                "linking_module": {
                    "api_name": "EmpXSkills", //API name of the linking module
                    "id": "5725767000002166520"
                ...
                "lookup_apiname": "Employees", //API name of the Employee lookup field in the linking module
                "connected_module": {
                    "api_name": "Skills", //API name of the connected module
                    "id": "5725767000002165263"
                },
                "api_name": "Skills_In_Related_List", //API of the related list of the connected module Skills in the Employees module.
                "connectedfield_apiname": "Employees", //API Name of the multi-select lookup field in the connected module (Skills)
               "connectedlookup_apiname": "Skills", //API name of the Skills module lookup field in the linking module.
                "id": "5725767000002166655" //Related List ID
            },
                ...

Step 2
Using the api_name of the linking module, make a GET Fields metadata API call to get the list of fields (along with their api_name) present in it. It lists all fields of the linking module in the response. 
Sample Request and Response

Search for the "data_type": "lookup" in the response. The lookup fields represent the connected modules in association with the linking module.
For example, in our case, the response will have two lookup fields. One of the lookup fields (with api name Employees) points to the Employees module, and the other one (with api name Skills) points to the Skills module. 

Step 3
Associate records via the Multi-select lookup field using the Insert Records API

To associate records via the MxN field, you need to know the IDs of the records in the Skills module. Here is the input body to insert the skills in the Employee module with the multi-select lookup field Skills. 
Here is the input body to insert a new Employee record and associate a Skills record to it using the MxN field.

Request URL: {{api-domain}}/crm/v6/Employees
Request Method: POST
Sample Input:
{
    "data": [
        {
            "Name": "Patricia",
            "Email": "patricia@mail.com",
            "Position": "Marketing Specialist",
            "Year_of_Experience": 5,
            "Skills": [ //API name of the multi-select lookup field in Employee module
                {
                    "Skills": { //API Name of the lookup field pointing to the Skills module in the linking module
                        "name": "Marketing",
                        "id": "5725767000002149427" //Record ID in the Skills module 
                    }
                },
                {
                    "Skills": {
                        "name": "Social Media Marketing",
                        "id": "5725767000002149476" 
                    }
                }
            ]
        }
    ]
}



How to disassociate an employee & skills relation while updating an Employee record through the Update Records API 

Request URL: {{api-domain}}/crm/v6/Employees
Request Method: PUT

Sample Input:

{
    "data": [
        {
            "id": "7890710000097291",
            "Name": "Patricia",
            "Email": "patricia@mail.com",
            "Position": "Marketing Specialist",
            "Year_of_Experience": 5,
            "Skills": [
                {
                    "_delete": null, //This association in the linking module will be deleted
                    "id": "5725767000008126002" //Record created in the linking module
                }
            ]
        }
    ]
}

Sending _delete:null will cause delinking of the association.

How to associate an employee's skills via "Linking Module"

You can associate the relationship between Employees and Skills module by creating records in the Linking module (EmpXSkills). Use the API names for the corresponding lookup fields, Employee (API Name: Employees) and Skills (API Name: Skills) in the input body.

Request URL: {{api-domain}}/crm/v6/EmpXSkills
Request Method: POST

Sample Input
{
   "data": [
        {
            "Name": "Patricia",
            "Employees": { 
                "id": "5725767000002161001" //unique record ID in the Employees module. GET your ID here
            },
             "Skills": { 
                "id": "5725767000002149476" //unique record ID in the Skills module. GET your ID here
            }
        }
    ]
}


Sample Response


The id in the above response is the Primary Key ID of an Employee-Skill association record in the linking module. This ID can later be used to do specific operations like association update or deletion via API.

How to disassociate an employee & skills relationship via "Linking Module"
Use the Delete Records API to delete the record which corresponds to the specific relation between Employee and Skills module in the EmpXSkills module. You can get the record ID for the specific association using the Get Records API for the linking module. 
Use the Delete Record API to delete the specific record, thereby deleting the specific association between the Employee and Skills record. Please note that only the association is removed, and not the individual records. 
Sample Request and Response



When to use create/update operation in Employees/EmpXSkills module?

Use "Employees" module: When you want to create/update records in the Employees module, and associate the record with a Skills record in a single API call.
Use "EmpXSkills" module: When you want to associate/disassociate the relationship between existing Employees and Skills records. 

Retrieve data via COQL API and Bulk Read API

There may be situations where you need to fetch records based upon certain conditions.
For example, Zylker's HR team wants to retrieve the list of employees having more than 4 years of experience and are experts in Social media marketing. In this case, they can use Zoho CRM's COQL API or Bulk Read API. Let's see how to achieve this.

Retrieving MxN data via COQL API

We know that both the Employees and Skills modules' association data is maintained in the linking module. In order to retrieve data from the linking module, query using the API name of the lookup fields in the linking module.

Request URL: {{api-domain}}/crm/v6/coql
Request Method: POST

Sample Input:

{
    "select_query" : "select Employees.Name as employee_name, Employees.Year_of_Experience as employee_experience, Skills.Name as skill_name from EmpXSkills where Employees.Year_of_Experience > 4 and Skills.Name like '%Social%'"
}


From the SQL perspective, above COQL can be interpreted as
select emp.Name as employee_name, emp.Year_of_Experience as employee_experience, skill.Name as skill_name from EmpXSkills left join Employees as emp on EmpXSkills.Employees = emp.id left join Skills as ski on EmpXSkills.Skills = ski.id where emp.Year_of_Experience > 4 and ski.Name like '%Social%'

Sample Response


Retrieving MxN data via Bulk Read API

Bulk Read API allows you to fetch a large set of data i.e., you can fetch a maximum of 200,000 records in a single API call. 
To export linking module records, use its API name.

Request Method: POST
Sample input to export linking module's records:
{
    "callback": {
        "method": "post"
    },
    "query": {
        "module": {
            "api_name": "EmpXSkills" //API name of the linking module
        },
        "file_type": "csv"
    }
}

Export linking module records that meet the specified criteria
To export linking module's records based on the given criteria above (similar to the COQL API).
{
    "callback": {
        "method": "post"
    },
    "query": {
        "module": {
            "api_name": "EmpXSkills"
        },
        "fields": [
            "Employees.Name",
            "Employees.Year_of_Experience",
            "Skills.Name"
        ],
        "criteria": {
            "group": [
                {
                    "field": {
                        "api_name": "Employees.Year_of_Experience" 
                    },
                    "comparator": "greater_than",
                    "value": "4"
                },
                {
                    "field": {
                        "api_name": "Skills.Name"
                    },
                    "comparator": "contains",
                    "value": "Social"
                }
            ],
            "group_operator": "AND"
        }
    }
}


As the API is an asynchronous API, the response will not be available instantly; the bulk read job is scheduled, and the status can be checked. Once the job is completed, you will be notified in the callback URL. The records are available in a downloadable CSV file or ICS file (for events). See the Bulk Read API document to know how to view the status of the scheduled job and download the file, along with more sample requests and responses.

We trust that this post meets your needs and is helpful. Let us know your thoughts in the comment section or reach out to us at support@zohocrm.com
Stay tuned for more insights in our upcoming Kaizen posts!

------------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------------
Cheers!



    • 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

    • Recent Topics

    • Ability to Set a Unified Tab Order/View for All Users in Zoho Projects

      Hello Zoho Projects Team, We hope you are doing well. We would like to submit a feature request regarding tab/menu organization in Zoho Projects. Current Behavior: The tab (module) order in Zoho Projects is user-specific. Each user (internal or external)

    • Task Order

      Hello! I've recently switched to Zoho Projects and a long time user of MS Project, Asana and LiquidPlanner (which has recently been purchased) and I'm running into a frustration I'm hoping someone can assist with. It has to do with how tasks are ordered

    • Automating CRM backup storage?

      Hi there, We've recently set up automatic backups for our Zoho CRM account. We were hoping that the backup functionality would not require any manual work on our end, but it seems that we are always required to download the backups ourselves, store them,

    • 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 the

    • 2026 Product Roadmap and Upcoming Features

      This is your guide to what is coming in Zoho Vertical Studio throughout 2026. We’ll update this post throughout the year as items move from development to release, and as and when new initiatives are added. Once a feature is released, it will be reflected

    • Vendor legal and DBA names for USA users

      I would like to hear how Zoho Books users are handling DBA names in the vendor profile. If the Company name in the vendor profile has to be the legal name (line 1 of the W-9), whare are you entering the DBA name (the name that checks are made out to)

    • Zoho Books API invoice email bouncing with 'relaying-issues' error

      I have waited over 30 days for zoho books uk to assist with the following and i have had no replies or tickets erronously closed. The service has been terrible - very unlike zoho! So i am raising this here hoping that a community member can assist: Hello,

    • Stop the Workarounds: We Need Native Multi-Step Forms

      After over 17 years of community requests, I'm hoping the Zoho team can finally address the lack of native multi-page form support in Zoho Creator. This has been one of the longest-standing feature requests in the community, with threads spanning nearly

    • Product Updates in Zoho Workplace applications | January 2026

      Hello Workplace Community, Let’s take a look at the new features and enhancements that went live across all Workplace applications for the month of January. Zoho Mail Zoho People Notifications preview in Zoho Mail Notification emails from Zoho People

    • How do i setup default values for few fields

      We have few fields in CRM like rate of return, type etc - they can be picklist and standard inut fields. picklist we have choice to set default value. but how do we default some value in input type of fields?

    • We know the company but not the contact

      We are fairly new to Zoho, part of our marketing stack is we use products like lead feeder to identify which companies are visiting our site. We are able to match this data to salesiq but cannot find a way to add a company name to the salesiq visitor

    • Customize Calendar view in Teamspaces Settings

      Right now every customization that happens inside of the calendar view inside of CRM is only visible for the specific user. We want to be able to set up calendar views as an admin for specific roles. I would suggest to do that inside of the settings of

    • How to filter subform report based upon main form report in dashboard

      Hi Team, I am creating a dashboard in Zoho Analytics. I want to have a main form report and below I want to show subform report of main form. If I filter the main form with date then I want to show subform records based upon main form. how can I achieve

    • using the Client script I want to Hide Show the Fields

      if Related to service means some of the field like service no want to shoe and hide Amc no , purchase no how i achive this let issu = ZDK.Page.getField('Issue_Related_To').getValue(); if (issu == 'Service') { var field_obj = ZDK.Page.getField('Warranty_Cases');

    • Ask the Expert – Zoho One Admin Track : une session dédiée aux administrateurs Zoho One

      Vous administrez Zoho One et vous vous posez des questions sur la configuration, la gestion des utilisateurs, la sécurité ou encore l’optimisation de votre back-office ? Bonne nouvelle : une session Ask the Expert – Zoho One Admin Track arrive bientôt,

    • Write-Off multiple invoices and tax calculation

      Good evening, I have many invoices which are long overdue and I do not expect them to be paid. I believe I should write them off. I did some tests and I have some questions:  - I cannot find a way to write off several invoices together. How can I do that,

    • Kaizen #210 - Answering your Questions | Event Management System using ZDK CLI

      Hello Everyone, Welcome back to yet another post in the Kaizen Series! As you already may know, for the Kaizen #200 milestone, we asked for your feedback and many of you suggested topics for us to discuss. We have been writing on these topics over the

    • vendors / customers with 2 different address and gst no

      Why can't we have option for more than one address and depending on the state option for more than 1 GST no. ? We have customers / vendors PAN india with different addresses and GST no. for different states.

    • Recurring Automated Reminders

      Hi, The reminders feature in Zoho Books is a really helpful feature to automate reminders for invoices. However, currently we can set reminders based on number of days before/after the invoice date. It would be really helpful if a recurring reminder feature

    • Fail to send Email by deluge

      Hi， today I gonna update some email include details in deluge, while this msg pops up and restrict me to save but my rules has run for one year. can you tell me how to use one of our admin account or super admin account to send the email? I tried to update

    • Transitions do not update fields until the record moves to next stage

      We have a blueprint where a couple of stages have multiple transitions. If only some of the transitions are completed, but not all, Zoho does not update any of the fields impacted by the completed transitions. Is there any way Zoho can udate the fields

    • Zoho CRM - Kiosk Studio : Use action responses across your kiosks with sequential actions

      Hello Everyone, Imagine building a kiosk that gives you full control over how actions are executed in later screens in that same kiosk. What if you could use data from a previous action later in that kiosk—with no interruptions or data gaps? This is exactly

    • Ability to CC on a mass email

      Ability to CC someone on a mass email.

    • Get Cliq Meetings in my O365 calendar

      Hi, we are currently evaluating to replace the Teams Messaging and Meetings with Cliq. We currently still have all our email and calendars in O365. What i want to achieve is, to create a (ZOHO) meeting from Cliq and have this meeting added to my Outlook/O365

    • Custom Button to convert a Deal to a Custom Module?

      Hello Community I am in process of building out a custom CRM for my team and part of this is looking at building out a Custom Button or function of some sort where when a Deal is marked Closed Won the system will allow for a "Convert to Job" option to

    • Power up your Kiosk Studio with Real-Time Data Capture, Client Scripts & More!

      Hello Everyone, We’re thrilled to announce a powerful set of enhancements to Kiosk Studio in Zoho CRM. These new updates give you more flexibility, faster record handling, and real-time data capture, making your Kiosk flows smarter and more efficient

    • Change eMail Template for Event-Invitations

      Hello ZOHO-CRM Team How I can change the eMail Template for Event-Invitations? I work with the German Version of the Free Version. I know how I can modify eMail alerts or Signature Templates, but where I can other eMails modify you send out? Thank you

    • Workdrive Oauth2 Token Isn't Refreshing

      I have set up oauth for a bunch of zoho apis and have never had a problem with oauth. With workdrive i am using the exact same template i usually use for the other zoho apps and it is not working. All requests will work for the first hour then stops so

    • Migrate Your Notes from OneNote to Zoho Notebook Today

      Greetings Notebook Users, We’re excited to introduce a powerful new feature that lets you migrate your notes from Microsoft OneNote to Zoho Notebook—making your transition faster and more seamless than ever. ✨ What’s New One-click migration: Easily import

    • How can I import OLM to Yandex Mail easily?

      For migrating Mac Outlook OLM data to Yandex Mail efficiently, the Aryson OLM Converter is a reliable professional tool that ensures complete data integrity throughout the process. Unlike manual methods, which can risk inconsistent formatting or missing

    • Introducing Radio Buttons and Numeric Range Sliders in Zoho CRM

      Release update: Currently out for CN, JP, AU and CA DCs (Free and standard editions). For other DCs, this will be released by mid-March. Hello everyone, We are pleased to share with you that Zoho CRM's Layout Editor now includes two new field formats—

    • Is it possible to setup bin locations WITHOUT mandating batch tracking?

      Hi fellow zoho users, I'm wondering if anyone else has a similar issue to me? I only have some products batch tracked (items with shelf life expiry dates) but I am trying to setup bin locations for my entire inventory so we can do stock counting easier.

    • Implementing Inventory Process

      I am just starting to create an inventory system through Zoho for a nonprofit. We receive in-kind donations of items for kids, and utilize them in 2 or 3 different programs. Then families come in and take the items. I'm thinking of this structure: Our

    • Best way to start zoho inventory with bulk openning stock

      We are already using zoho book since long time for cars trading company. Now to streamline more, would like to import the excel data of closing stock of inventory to zoho inventory and to start on. Since we need to track each VIN (unique vehicle id number)

    • Service Reports.

      Hello Team, I have a requirement to create multiple service reports for a single AP. That means, in one AP I have 5 service line items, and all line items are linked to assets. Once I complete the AP, I want to generate 5 individual service reports, one

    • Blueprint enhancements - Parallel and multiple transitions, and more

      Last modified on Sep 4, 2023: All Zoho CRM users can now access these enhancements. Initially, these features were available only on an early access basis and by request. However, as of August 2, 2023, they have been made available to all users in all

    • Item Bulk Edit - Allow for Reorder Level

      We're implementing a process for using the Reorder Level field for Items, and I have to go through and add this value to a huge chunk of our Items. It's driving me bonkers that I have to do this individually through the UI rather than bulk updating. It

    • Zoho CRM || Unable to Bulk Assignment of Territories for Contacts

      Dear Zoho CRM Support Team, I hope this email finds you well. We recently performed a bulk upload of Contacts into Zoho CRM using the official sample Excel template downloaded from the CRM. The upload itself was completed successfully; however, we encountered

    • What's New in Zoho Inventory | August – October 2025

      Hello customers, The last quarter has been incredibly productive! We've released a powerful slate of new features and enhancements in Zoho Inventory designed to give you better control, greater efficiency, and expanded functionality across your inventory

    • Disable Zoho Inventory Tracking / Delink Zoho Books & Inventory

      We have integrated zoho inventory with zoho books? Now after a long time, we want to disable inventory tracking and delink these 2 modules. Zoho says we cant do it. Anybody else going thru the same ? Any possibility at all? Why does zoho not allow to

    • Next Page