CDT has been created from the database, and with same primary key as database.
HTTP Code: 500 APNX-1-4198-000 Error Evaluating UI Expression Expression evaluation error [evaluation ID = 8OWKHVBV] : [valid:false,syntaxError:false,value:Expression evaluation error: An error occurred while executing a save: Expression evaluation error at function a!rtd_sanitizeRecordType [line 549]: Keys must be unique (case insensitive match) [createdby]]
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Is it possible you're trying to auto-generate the primary key in two places? Through the primary key definition in your CDT as well as a sequence setup in the database itself?
thanks for replying. a teammate found the cause. database is using the same field name twice. so cdt also has duplicate fiels names.
Glad you found it!
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