Diagnosis
The destination &V1& of type "R/3 function module" is assigned tothe selected process message via the message category. However, thecorresponding function module &V2& is not active.
The process message has not been sent to the destination &V1&.

Procedure
RESET N1
Activate the function module &V2& in the function library.
INCLUDE 'NA_EMPF_SEND' OBJECT DOKU ID TX LANGUAGE E
Otherwise, manually post the message data if necessary.