Message Number list used by SAP ABAP Program MPU21O01 (Output routines -> tax reporter)
SAP ABAP Program MPU21O01 (Output routines -> tax reporter) is using
# Object Type Object Name Object Description Note
     
1 Message Number  U1 - 028 No employees are exempt from tax reporting
2 Message Number  U1 - 029 No transferred-in employees to be evaluated