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"); }

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

  • 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

    Nederlandse Hulpbronnen


      • Recent Topics

      • Automating Employee Birthday Notifications in Zoho Cliq

        Have you ever missed a birthday and felt like the office Grinch? Fear not, the Cliq Developer Platform has got your back! With Zoho Cliq's Schedulers, you can be the office party-cipant who never forgets a single cake, balloon, or awkward rendition of
      • Add deluge function to shorten URLs

        Zoho Social contains a nice feature to shorten URLs using zurl.co. It would be really helpful to have similar functionality in a Deluge call please, either as an inbuilt function or a standard integration. My Creator app sends an email with a personalised
      • form data load issue when saving as duplicate record is made

        Hello. I have a form with a lookup when a value is selected the data from the corresponding record is filled into all of the fields in the form. But the form is loaded in such a state that if any value is changed it will take all of the values pre loaded
      • Invoice template, how to change the text under "Notes" and "Terms and Conditions"

        In "Invoice templates", there are two text/info sections at the bottom:"Notes" and "Terms and Conditions". It is possible to change the names of these two headings, but how is it possible to change/alter the text under it. As a standard it says "Thank you for your business" under Notes - I need to change it into something different- How? Thank you.
      • Recurring Tasks and Reminders in Projects

        Recurring tasks are tasks that are created once, and then recreated automatically after a designated time period. For example, the invoice for your billable tasks is due every week. You can set that task to recreate itself every week. Also, the future
      • Unable to remove the “Automatically Assigned” territory from existing records

        Hello Zoho Community Team, We are currently using Territory Management in Zoho CRM and have encountered an issue with automatically assigned territories on Account records. Once any account is created the territory is assigned automatically, the Automatically
      • Improved Functionality PO Bill SO Invoice

        Hello, I need to enter over 100 items, it's frustrating to scroll a few item rows and wait for more to load, then scroll again. It would be nice to have buttons that scroll to the top or bottom with one click. Furthermore, these items I'm adding are VAT
      • Wishes for 2026

        Hello, and a happy new year 2026! Let's hope it's better for everyone. I'd like to share some thoughts on Zoho One and what could be useful in the short, medium, and long term. Some things are already there, but not applied to Zoho One. Others seem like
      • How to Integrate Zoho Books with Xero (No Native Connection Available)

        Hi everyone, I’m currently facing an issue with integrating Zoho Books invoices with Xero, as I’ve noticed Zoho does not provide a native integration with Xero at this time. I would like to ask: What are the common or recommended solutions for syncing
      • ZohoSalesIQ.Chat cannot send messages

        Chat cannot send messages. Our app implements the customer service chat window functionality by integrating the Mobilisten SDK. Recently, we encountered an issue: after successful SDK initialization and visitor registration, when the `startWithQuestion`
      • Markup instead of discount??

        Is it possible to have the discount field on an invoice or estimate be a markup instead? It's the very same functionality that I am looking for - to be able to markup an individual item by either a $ or a % and have that cost added (instead of subtracted) to the item cost.  Currently, I use the tax feature to accomplish this, but it's very awkward to have "Markup 15%" listed after the subtotal. Plus, if I want to markup items at different rates, I end up with several "markup" lines in the totals
      • Plan switch

        I thought I pressed the Free button, but after they set up the account, I see that I am on a Premium trial. Is this usual? How do I get onto the Free version?
      • 'Tax registration date'?

        The second question in setting up is 'Tax registration date'. My first question: which tax? My second question: why do you need the registration date?
      • What if we don't have an ABN?

        Australian business. Setting up. We have no ABN. It's not compulsory. Field not allowed to be blank. What to do?
      • Keeping track of project expenses

        I have talked to a few support techs and it is very hard for me to believe that Zoho's project accounting software can't keep accounts for my projects. I must not understand what they're saying. We get a contract to build something. So the project revenue
      • Linking Multi-UOM Barcodes to Products in Zoho Books

        Greetings, I'm using Zoho Books for retail shop and I'm running into a bit of a challenge with products that have multiple Units of Measurement (UOMs) and corresponding barcodes. For example, I sell cigarettes both as individual packets and in cartons
      • How to change "from" email address when invoicing.

        HELP! I'm new to Zoho Books and when I first set it up used a different email address than I currently want to use. I've tried to go to settings and change the default email address but when I generate an invoice it still shows the old email address (although I can't find it anywhere else). I really need to get this changed before I can use the program. Any help would be appreciated.
      • Critical Issue: Tickets Opened for Zoho Support via the Zoho Help Portal Were Not Processed

        Hi everyone, We want to bring to your attention a serious issue we’ve experienced with the Zoho support Help Portal. For more than a week, tickets submitted directly via the Help Portal were not being handled at all. At the same time no alert was posted
      • Hide/Show Subform Fields On User Input

        Hello, Are there any future updates in Hide/Show Subform Fields "On User Input"?
      • Cloning Item With Images Or The Option With Images

        Hello, when I clone an item, I expect the images to carry over to the cloned item, however this is not the case in Inventory. Please make it possible for the images to get cloned or at least can we get a pop up asking if we want to clone the images as
      • Custom validation in CRM schema

        Validation rules in CRM layouts work nicely, good docs by @Kiran Karthik P https://help.zoho.com/portal/en/kb/crm/customize-crm-account/validation-rules/articles/create-validation-rules I'd prefer validating data input 'closer to the schema'
      • Adding Default Module Image into mail merge field

        As with most people finding their way to these forums i have a specific requirement that doesn't seem to be supported by Zoho I have created 2 custom modules to suit my purpose 1 is an inventory type module that lists aluminium extrusions, and all relevant
      • Is it possible to roll up all Contact emails to the Account view?

        Is there a way to track all emails associated with an Account in one single view? Currently, email history is visible when opening an individual Contact record. However, since multiple Contacts are often associated with a single Account, it would be beneficial
      • Managing credit cards

        Hi, I'm hoping someone on this forum can help me out managing credit card accounts.  Transaction are entered as expenses using the credit card account and, as expected, the card balance shows as a negative since this is clearly money I owe them.  Once I make a payment, of the full amount owed, I woudl expect the balance to become zero. It doesn't, the negative balance just keeps on increasing even though the payment is reflected correctly in my main operating account.  No-one at Zoho seems to understand
      • Free Training - Explore What’s New in Zoho One 2025

        Greetings! We hope you have all had a chance by now to get hands-on with the new features and updates released as part of ZO25. Yes, we understand that you may have questions and feedback. To ensure you gain a comprehensive understanding of these updates,
      • Quick way to add a field in Chat Window

        I want to add Company Field in chat window to lessen the irrelevant users in sending chat and set them in mind that we are dealing with companies. I request that it will be as easy as possible like just ticking it then typing the label then connecting
      • How to create a two way Sync with CRM Contacts Module?

        Newbie creator here (but not to Zoho CRM). I want to create an app that operates on a sub-set of CRM Contacts - only those with a specific tag. I want the app records to mirror the tagged contacts in CRM. I would like it to update when the Creator app
      • How to import data from PDF into Zoho Sheet

        I am looking to import Consolidated Account Statement (https://www.camsonline.com/Investors/Statements/Consolidated-Account-Statement) into zoho sheet. Any help is appreciated. The pdf is received as attachment in the email, this document is password
      • Trigger Workflow, Approval Process, Blueprint by Deluge in Zoho CRM

        #Tips & Trick If you intend to activate your Workflow, Approval Process, or Blueprint through either the deluge script or Zoho CRM API during the creation, updating, or deletion of a record Try this Script mp = Map(); trigger = List(); // Workflow trigger.add("workflow");
      • Zoho Projects Android app: Integration with Microsoft Intune

        Hello everyone! We’re excited to announce that Zoho Projects now integrates with Microsoft Intune, enabling enhanced security and enterprise app management. We have now added support for Microsoft Intune Mobile Application Management (MAM) policies through
      • Cant't update custom field when custom field is external lookup in Zoho Books

        Hello I use that : po = zoho.books.updateRecord("purchaseorders",XXXX,purchaseorder_id,updateCustomFieldseMap,"el_books_connection"); c_f_Map2 = Map(); c_f_Map2.put("label","EL ORDER ID"); c_f_Map2.put("value",el_order_id); c_f_List.add(c_f_Map2); updateCustomFieldseMap
      • Set connection link name from variable in invokeurl

        Hi, guys. How to set in parameter "connection" a variable, instead of a string. connectionLinkName = manager.get('connectionLinkName').toString(); response = invokeurl [ url :"https://www.googleapis.com/calendar/v3/freeBusy" type :POST parameters:requestParams.toString()
      • Possible to connect Zoho CRM's Sandbox with Zoho Creator's Sandbox?

        We are making some big changes on our CRM so we are testing it out in CRM's Sandbox. We also have a Zoho Creator app that we need to test. Is it possible to connect Zoho CRM's Sandbox to Zoho Creator's Sandbox so that I can perform those tests?
      • I Need Help Verifying Ownership of My Zoho Help Desk on Google Search Console

        I added my Zoho desk portal to Google Search Console, but since i do not have access to the html code of my theme, i could not verify ownership of my portal on Google search console. I want you to help me place the html code given to me from Google search
      • Timeline Tracker

        Hi Team, I am currently using Zoho Creator – Blueprint Workflows, and I would like to know if there is a way to track a timeline of the approval process within a Blueprint. Specifically, I am looking for details such as: Who submitted the record Who clicked
      • Primary / Other Billing Contacts

        If you add an additional contact to a Zoho Billing Customer record, and then mark this new contact as the primary contact, will both the new primary and old primary still receive notifications? Can you stop notifications from going to the additional contacts
      • Is it possible to enforce a single default task for all users in a Zoho Projects ?

        In Zoho Projects, the Tasks module provides multiple views, including List, Gantt, and Kanban. Additionally, users can create and switch to their own custom views. During project review meetings, this flexibility creates confusion because different users
      • [Free Webinar] Zoho Creator webinars - Learning Table and Creator Tech Connect Series in 2026

        Hello everyone, Wishing you all a wonderful new year! May 2026 and the years ahead bring more opportunities, growth, and learning your way 🙂 We’re excited to kick off the 2026 edition of the Learning Table Series and Creator Tech Connect Series ! Learning
      • Reply and react to comments

        Hi everyone! We're excited to bring to you a couple of new features that'll make your sprint process simpler. A cloud application brings with it an array of social media features that can be efficiently used in your organizational setup. As an agile scrum
      • Module Customisation - Lookup function not available

        Good evening, Within my business, I can have multiple customers, who have multiple mobile assets. When I set these assets up, I enter information such as vehicle registration, Vehicle identification number (VIN), Unit number, YOM, in addition to others.
      • Next Page