SAP Message PT_TMW_FLD_SEL_CUST021 - Entry missing in application indicator field

Diagnosis The application indicator (field APPID) must be filled if either aninterface name (field INTERFACE_NAME) or the usage type of a layout hasbeen specified (field LAYOUT_USAGETYPE). Procedure Either specify the application indicator or delete the interface nameor usage type of a layout. You can use the F4 help for possible valuesfor the application indicators.