Kaizen #198: Using Client Script for Custom Validation in Blueprint

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. 
Hello everyone!

Welcome back to another exciting Kaizen post. Today, we will explore how to use Client Script to handle a use case in Blueprint beyond Zoho CRM’s native features. This will solve the use case raised in this community post.

Quote
"At Zylker, the Admin wants to proceed with a Blueprint transition only if at least one of the four fields is filled during the transition "Gather Details" . However, Blueprints only allow fields to be marked as either mandatory or optional. There's no built-in way to enforce a rule like at least one required.The use case is to add a custom validation that allows the transition only if any one of these fields in the mandatory fields form is filled."

In this post,

  • Need for custom validations in Blueprint
  • Client Script Events related to Blueprint
  • Use Case
  • Solution
  • When to use this event?
  • Summary
  • Related Links


1. Need for custom validations in Blueprint

In Zoho CRM, Blueprint allows administrators to streamline and guide users through structured processes by defining states, transitions, and mandatory fields at each step. While Blueprints support marking fields as mandatory or optional during transitions, they do not support conditional logic like at least one of these fields must be filled, making a field mandatory based on another field’s value, validating date ranges, etc.

To accomplish such requirements, you can use Client Script.

2. Client Script Events related to Blueprint

The following Client Script events can be used in Blueprint.

  • beforeTransition - This event occurs before the transition states of a Blueprint, as per the process flow designed in the blueprint. Click here to know how to use this event.
  • onBeforeMandatoryFormSave - This event occurs when the user clicks the save button of the mandatory fields form, but before saving the values.
  • You can use this event to validate the data entered by the user and stop proceeding further.
  • onMandatoryFormLoad - This event occurs when the mandatory fields form appears on the screen. If you want to show a message or accomplish any custom action when the mandatory fields form loads, you can use this event.

Click here to see the related Events documentation. These events can be configured in both Standard and Canvas Detail Pages.


Notes
Note:

In Zoho CRM, you can make certain fields mandatory for a particular transition in a Blueprint. When a user tries to save a record without filling in these required fields, Zoho CRM stops the action and shows a popup asking the user to complete the missing details.This popup is called the mandatory field form. This form also appears when you make fields mandatory using Layout rules.

3. Use Case

Zylker is a manufacturing organization which uses Zoho CRM. The Admin wants to ensure that at least one of the following fields is checked by the user before proceeding from the "Gather Details" transition.
  • GST ID
  • Payment Terms
  • Trade License Copy
  • Expected Monthly Order Volume
The following is the Blueprint configuration is for the transition "Gather details".



Blueprints only support marking fields as mandatory or optional, and there's no native way to enforce “at least one required.” However, the admin wants to add a custom validation to allow transition only if any one of these fields is filled. 

Solution

  • To accomplish this requirement, you need to create a Client Script with onBeforeMandatoryFormSave Event.

  • Go to Setup > Developer Hub > Client Script. Click +New Script.
  • Specify the details to create a script and click Next.


  • Enter the following script and click Save.
  1. if (form.Lead_Status == "-None-") {
  2.   if (
  3.     form.GST_ID_collected ||
  4.     form.Payment_terms_shared ||
  5.     form.Trade_License_Copy_collected ||
  6.     form.Expected_Monthly_Order_Volume
  7.   ) { ZDK.Client.showMessage("Transition Successful"); }

  9.   else {
  10.     ZDK.Client.showAlert("You must check at least *one* field to proceed");
  11.     ZDK.Client.navigateTo('record_detail', {
  12.       module: 'Leads',
  13.       record_id: $Page.record_id,
  14.     }); }}

  • In the above script, form is the argument of the onBeforeMandatoryFormSave Event. It holds the values of the fields in the mandatory form and the current value of the base field. Here the base field is Lead Status.

  • By checking the value of Lead_Status, the script ensures it only runs during the "Gather details" transition and does not trigger for other transitions.

  • The ZDK.Client.navigateTo() function redirects the user to the Detail Page and halts the transition process.

  • $Page.record_id is the Client Script constant that returns the current record id.

  • To inform the user, ZDK.Client.showAlert( ) displays the message "You must check at least one field to proceed", clarifying why the transition did not occur."

  • Here is how the Client Script works.


  • In this GIF, you can see that the transition is halted if none of the fields in the mandatory form are selected. However, if at least one field is checked, the transition proceeds as expected.

5. Summary

In this post, we have discussed 

  • When to use mandatory form events?
  • How to stop a blueprint transition based on custom logic?
  • How to navigate to a page using Client Script?
  • How to fetch the current record ID using Client Script?






    • 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

    • Is Zoho Assist Secure Connect even practical for 1 person shop?

      I was gun ho with Zoho Assist to replace my existing Remote Access product I have been using but I need to implement MFA on each unattended connection. Right now each of these connections in my other product has a rotating token that I have enter off

    • Export Campaign to another document?

      How can I export my Campaign to Word and PDF? I want to create a PDF archive on my website with old campaigns /Peter

    • Filter isn't

      The ability to filter the history of a given flow to a specific status however it would be great to have the ability to filter to a status that isn't something for example if i want to find all history that isn't complete.

    • Zoho CRM Functions: Redesigned Interface, Rich Analytics, and Multi-Language Support

      Hello everyone! We have given Functions in Zoho CRM a major overhaul with a new interface that makes it easier to build, organize, monitor, and troubleshoot your functions throughout their lifecycle. As part of this revamp, we have also introduced a unified

    • Unable to view existing or create new WhatsApp IM templates on Zoho Desk

      Hi there, Is there a issue with WhatsApp templates in Zoho Desk currently [17 Aug 2026]? I am unable to view existing or create new WhatsApp IM templates. It's saying "Oops, something went wrong. Please try again later."

    • WhatsApp Calling Integration via Zoho Desk

      Dear Zoho Desk Team, I would like to request a feature that allows users to call WhatsApp numbers directly via Zoho Desk. This integration would enable sending and receiving calls to and from WhatsApp numbers over the internet, without the need for traditional

    • Gemini Action - Add "inineData" Support

      Thank you guys for adding a Gemini action. I like Gemini models for the "grunt work" of AI, as they have the cheapest tokens of the trustworthy providers One thing that's missing in the action, though, is the ability to pass file data. If you pass a base64-encoded

    • LinkedIn RSC is now live in Zoho Recruit

      LinkedIn Recruiter System Connect (RSC) is here. Your Zoho Recruit data (candidates, jobs, notes, stage updates, resume attachments, and more) now syncs with LinkedIn in real time. Note: LinkedIn RSC is included with your LinkedIn Recruiter Corporate

    • What's New in Zoho Inventory | April & May 2026

      Hello users, We're excited to roll out the latest Zoho Inventory updates for April and May 2026. These enhancements are designed to make your daily operations smoother and more efficient, from advanced inventory management and flexible pricing to automated

    • Old Gmail inbox migration to Zoho mail

       Hi, I have been checking Zoho products for a while. This week finally decided to migrate my company mail accounts from Gmail to Zoho. I was looking for sometime and could not found a way to perform this; only found the way to take a backup of my old account into Zoho connecting throught pop3 server; but I'm not looking for that, I want that in my new Zoho Mail inbox appear all my mail messages and conversations as I see it in Gmail. Searching in Google and in Zoho Mail docs the workaround begun

    • Zoho CRM Copilot Connector

      Hello, Are there plans to release a connector for Zoho CRM and Copilot? I'm in the early research stages of potentially switching our CRM solution to Microsoft Dynamics because of its out of the box integration with Copilot. The advantage being that we

    • Drop Down Menu - Adding up values

      I have a form that has 22 drop down fields each having a value of 0-10 to choose from. Is it possible to have it add up the total value of those selected numbers and have it tally it up in another field at the end? So example: if each of the 22 fields

    • [Webinar] Conversational AI: The new paradigm for agentic analytics

      From hard coding to powerful agents, data and analytics is undergoing a tectonic shift, and conversational agents are at the forefront of this transformation. This goes beyond democratizing business intelligence; it's about accelerating the path from

    • Make Rich Text fields available in Canva Print Views

      Everything is on the title. I don't really understand why this is not already possible as Rich Text Fields are available in Canva Detailed Views for example.

    • How to RSVP an invite using the Zoho API

      Perhaps I am missing something, but I don't see any way to use the Zoho API to RSVP an Invite. This what I've tried: PATCH https://calendar.zoho.com/api/v1/calendars/{cal}/events/{event} ?attendeedata={"attendees":[{"email":"me@example.com","status":"ACCEPTED"}],

    • FSM service call view

      "Why can't we sort by assigned service resource in the service call view?"

    • Zia Agents looks promising, but I still cannot deploy my first agent or connect WhatsApp after weeks of support tickets

      Hi Everyone, I am posting here because I am stuck and need practical help from someone who has successfully deployed a Zia Agent with WhatsApp. Zia Agents looks like a very promising product. I have watched the platform expand quickly, and I have noticed

    • Marketing Tip #46: Run flash sales the right way

      A flash sale can do a lot for your store. It can clear slow-moving inventory, spike revenue on a slow day, or reward your most loyal customers. But if done carelessly, flash sales can backfire. Customers start expecting discounts, stop buying at full

    • Send Notify on new Ticket to a Team based on customers email address AND only on these addresses

      Hi ZohoDesk, I would like to have Team A receive a Notification on every ticket created. I would like Team B to receive a Notification email only if the incoming ticket contains elements of a certain group of customer's email addresses only.  They should

    • Inventory API - Retrieve all uploaded product / item images

      I know that I can get the primary image for each product / item or composite item, by using the /image endpoint.  https://inventory.zoho.com/api/v1/compositeitems/<item-id>/image?authtoken=<TOKEN> This will return only one photo, even if the item has multiple images uploaded. Is there a way to retrieve all images stored for an item via the Zoho Inventory API?

    • Change Last Name to not required in Leads

      I would like to upload 500 target companies as leads but I don't yet have contact people for them. Can you enable the option for me to turn this requirement off to need a Second Name? Moderation update (10-Jun-23): As we explore potential solutions for

    • Setting checkbox value on template in Sign from Creator

      Good day, Please help me understand how do I set a tick from a checkbox in Creator into a checkbox on a Sign template. Below is the only values on the Sign template and the code from Creator, "field_boolean_data": {}, "field_date_data": {}, "field_radio_data":

    • Cliq iOS can't see shared screen

      Hello, I had this morning a video call with a colleague. She is using Cliq Desktop MacOS and wanted to share her screen with me. I'm on iPad. I noticed, while she shared her screen, I could only see her video, but not the shared screen... Does Cliq iOS is able to display shared screen, or is it somewhere else to be found ? Regards

    • How to Delete, Disable, or Remove Streams from the Mail App?

      Is there a way to remove Streams from the mail app sidebar? I get too many notifications, it doesn't add any value to Zoho's functionality (especially since you can just make comments inside an email), and is distracting. I do not want notifications/alerts

    • Remove the mandatory Name Card buttons (or at least make them optional)

      Please remove the mandatory Name Card buttons (or at least make them optional) A recent change to the Name Card in Zoho SalesIQ (currently affecting WhatsApp) introduced mandatory buttons before a visitor can provide their name. I believe this change

    • Zoho Wont Login

      Can anyone tell me why my password stops logging in all the time? Is it a ploy to make you change your password? I have to use OTP all the time. I dont want to change passwords all the time. Over the last couple of years I've found myself using Zoho (as

    • Frustrated with Zoho Assist QuickSUpport

      Trialling Zoho Assist and I have a variety of clients. A lot are computer illiterate. Some have poor vision. The current support sessions are using apps which have desktop icons for the appropriate apps. I either connect on demand then the client approves

    • HR Helpdesk Cases

      We have Zoho One Enterprise. I'm trying to find HR Helpdesk Cases, but my UI does not match the documentation. I'm not sure how to move forward.

    • CRM x WorkDrive: We're rolling out the WorkDrive-powered file storage experience for existing users

      Release plan: Gradual rollout to customers without file storage add-ons, in this order: 1. Standalone CRM 2. CRM Plus and Zoho One DCs: All | Editions: All Available now for: - Standalone CRM accounts in Free and Standard editions without file storage

    • Zoho Projects - Will there ever be a send email feature in Zoho Project?

      Hi team, Are there plans to or will there ever be a sendemail feature in Zoho Projects, brining it in line with other similar platforms like Asana, ClickUp and Monday? I know that you can add comments via email to a specific task, but I believe this only

    • Introducing Microsoft Word Integration in Zoho Contracts

      We are excited to announce a new feature that brings contract authoring and negotiation in your familiar environment — the Microsoft Word Integration. What This Integration Brings The Microsoft Word Integration connects Zoho Contracts with the Microsoft

    • Share Video Response Card ion Zobot

      I am using the zobot codeless bot builder in SalesIQ. I want to share a video but delay the next response card until after the video has finished playing or has been stopped. Is this possible?

    • Customer image field

      I created a custom image field for estimates, and it works as expected. The only issue I have is that I want to be able to place the custom image field in the estimate invoice. Is there a way I can do that, the field does not give the option to display

    • Sub Folders

      It would be great if there could be sub-folders in reports. We have a ton of individual reports and folders that would be easier to navigate this way 

    • Goals API - Zoho People

      Hi Team, I would like to get the API details for retrieving organisation-wise Goals from Zoho People. Currently, I am able to retrieve individual employee goals using the following API: https://people.zoho.com/api/v3/performance/goal/{emp_id} However,

    • Question and responses disapear

      I have a form where several people have had issues where the questions, responses or submission simply disappear when trying to complete the form. It seems to be random with no pattern of question, browser or OS. Hopefully there is a fix in the platform

    • Unable to send message;Reason:553 Relaying disallowed. Invalid Domain

      Hi, Now when I try to reply to an email, I see the Unable to send message;Reason:553 Relaying disallowed. Invalid Domain voicemessagedownloader.com error. I tested sending an email when I set it up in the past and it worked. I have checked the Zoho Organization

    • Guide customers to the right booking page with routing forms

      Greetings from the Zoho Bookings team! We're excited to introduce Routing Forms in Zoho Bookings. Routing forms let you collect information from customers before they schedule an appointment and automatically direct them to the most appropriate booking

    • Analytics Dashboard User Filters Default Value

      User Filters on Dashboard do not allow Unknown to be set as a default filter value. I have to include NULL values in my dashboard among other values but I can't include NULL/Unknown by default in Dashboard User Filters.

    • Horrible download speed

      Using a trial of Zoho Assist and downloading a 316 MB file on a 500/500 fibre connection to a remote computer on the same network took 7 mins to complete. On AnyDesk it took 1 min or so.

    • Next Page