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I need to put validation to restrict the lookup column "Name" to a certain number of characters(not 50,250,500). Can anyone suggest how can i achieve that?
You can add an event on the object itself through the configuration:
Get the value of the Name field and make sure that it isn't longer than x characters.
I am not able to add anything in that business process. Can you guide me how to achieve the above objective
Make sure the object exists in your package (custom package is the default one) and then use an event subprocess.
Here's an example on how to work with server side code:
You can then follow this logic: