How to show only extracted error message from Custom Validation on a Visualforce Page?

apex-code, salesforce, visualforce

Solution

You need to get the DML message like so:

ApexPages.Message msg = new ApexPages.Message(Apexpages.Severity.ERROR, excp.getdmlMessage(0) );
ApexPages.addMessage(msg);

Using Exception Messages

Problem

I have added few custom validations using Configuration for an object. I am inserting that object record through visualforce page. I have added `<apex:pageMessages/>` on my visualforce page. I have also written code block for catching the exception and to show the error message ob VF page. Please find code block below : ``` catch(DMLException excp) { ApexPages.Message msg = new ApexPages.Message(Apexpages.Severity.ERROR, excp.getMessage() ); ApexPages.addMessage(msg); return null; } ``` Still I am not able to get only error message from the custom validation. It shows me error like below : Insert failed. First exception on row 0; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, error_message_from_custom_validation_comes_here Is there any solution for this?

Original source