how to set the message for mandatory field

Hello Experts,
I need your help please.
SM 9.52.
I need to customize the messages displayed for the mandatory fields?

For example in change management I have "Normal Change" & "Release".
Each one has its own form & different caption names.

For example in NOrmal change the description field is called "Change Description" & in Release it is called "Release Description" (however in the database it is the same field).

How can I customize the message that is displayed for each form (in the datadict the field is called Change Description) so when we don't add this field in the Release, a message is displayed "Change Description is required", but I want to display "Release Description is required".

Can someone help?

Thanks