Diagnosis
The process instruction &V4& is arepeated process data request.
Characteristic &V2& assigns different message categories to it.Messages can be requested for these message categories. After eachmessage category you first have to assign the message characteristicspertaining to it.
However, the message characteristics of the preceding message categoryhave not been assigned before characteristic &V1& &V2&.

Procedure
Assign the characteristics of the preceding message category beforecharacteristic &V1& &V2&.
INCLUDE NA_INST_MESSCHAR OBJECT DOKU ID TX LANGUAGE E