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Athira VenugopalAthira Venugopal 

validation error message not showing properly

Hi,
I have created a validation rule for a custom object. Its working, but the error message is not shown properly.
mY ERROR MESSAGE IS   'Please enter Supplier New Start Date'.
But why there is an exception shown along with my message?..please help me..

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SwethaSwetha (Salesforce Developers) 
HI Athira,
Looks like there is a trigger/ custom code also running in the background that is causing this error message. You need to setup debug logs for detailed stack trace of the other error.

If this information helps, please mark the answer as best.Thank you