Diagnosis
The destination &V2& is assigned to the selected process message via itsmessage category &V1&. However, this destination is not defined anymore in Customizing. The message has not been sent to the destinationV2.

Procedure
RESET N1
Check and, if necessary, correct the definition of the message categoryV1 in customizing.
If necessary define the destination &V2& in Customizing.
INCLUDE 'NA_EMPF_SEND' OBJECT DOKU ID TX LANGUAGE E
Otherwise, manually post the message data if necessary.