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Field Custom Validation Exception

FIELD_CUSTOM_VALIDATION_EXCEPTION

This error occurs when a custom validation rule prevents a record from being saved. The validation rule evaluates to true, blocking the operation.

Common Causes

  • •A validation rule formula evaluates to true
  • •Required field conditions are not met
  • •Business logic validation fails
  • •Cross-field validation rules fail

Traditional Troubleshooting

1

Review the validation rule in Setup > Object Manager

2

Check the error message for specific field requirements

3

Verify all required fields are populated

4

Test the validation rule formula in the rule editor

5

Check field-level security and sharing settings

Solve with Clientell

Instead of manually troubleshooting, use Clientell to instantly identify and fix this error:

I was trying to save an Opportunity record, but it threw a ‘FIELD_CUSTOM_VALIDATION_EXCEPTION’ error. Can you find which validation rule caused it and explain what condition failed?

Related resources

Errors2How-to guides2Use cases1

Errors2

  • Required Field Missing

    REQUIRED_FIELD_MISSING

  • Invalid Field for Insert/Update

    INVALID_FIELD_FOR_INSERT_UPDATE

How-to guides2

  • How to Troubleshoot Salesforce Errors

    Learn how to identify, analyze, and resolve common Salesforce errors quickly and effectively.

  • How to Create Validation Rules in Salesforce

    Learn how to create validation rules to enforce data quality and business logic in your Salesforce org.

Use cases1

Paste an error. Get the root cause in seconds.

Try this prompt

“Apex error ‘FIELD_CUSTOM_VALIDATION_EXCEPTION’ on saving Opportunity — identify which validation rule fired and why.”

FIELD_CUSTOM_VALIDATION_EXCEPTION
Object: Opportunity
Action: Save record
Root Cause
Rule: Require_Amount
Amount must be > 0 when Stage ≠ Prospecting
Set Amount > 0 or change Stage to Prospecting
1 validation rule identified

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