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jasonwanBella
Display custom error message from APEX without Visualforce
Is it possible to display custom error message from APEX without Visualforce?
Not sure if there is a simple method I might have overlooked. Trying to setup something similar to a validation rule where if a specific field has a value, I want to notify the user that something is wrong in my own custom wording. Wondering if this works for APEX coding (say, on the top of the page).
Here is a sample: