SAP Message PT_TMW_FLD_SEL_CUST020 - Delete value &1 from the application indicator field (APPID)

Diagnosis
The application indicator (field APPID) can only be filled if either aninterface name (field INTERFACE_NAME) or the usage type of a layout hasbeen specified (field LAYOUT_USAGETYPE).

Procedure
Either delete the application indicator or specify the interface nameor usage type of a layout.