RPG (IBM i / AS/400) · Message ID
What does CPF5029 mean in RPG (IBM i / AS/400)?
Data mapping error on file operation. A PUT or UPDATE through a logical file hit a data mapping error, commonly from a GROUP BY view, a field with a default value, or a null value present in a record where the program does not expect one.
Data mapping error on file operation. A PUT or UPDATE through a logical file hit a data mapping error, commonly from a GROUP BY view, a field with a default value, or a null value present in a record where the program does not expect one.
Check whether the logical file involves GROUP BY or joins that do not support the write operation attempted, and confirm the physical file's null-capable fields are being handled explicitly in the program.