Hello everyone,
Using the GET method, I’m able to retrieve the project scheduling resource data, which confirms that the record exists in the system and is available for update. I’m trying to update the PeriodId field with the value 'Period' using the PATCH method, but I'm encountering the following error:
"The field with ID '0' does not exist in table 'ResResourceSetupDataEntity'"
GET method:

PATCH method:

I also attempted the same update using the POST method but received the same error.
POST method:

However, when importing the same data with the same values through the Data Management Framework (DMF) for the same data entity, it works without any issues—the value updates successfully with no errors.

Would appreciate an exact and working solution or guidance to make this work for the custom entity.
Thanks in advance!
CC: @Martin Dráb