SAP Message 0D641 - Posting transfer cannot be started: RFC is active

Diagnosis
When the start prerequisites for posting data transfer were checked, anRFC was found to be active.

System Response
Posting data transfer was not started.

Procedure

Procedure for System Administration
Restart the program as soon as the RFC finishes. If this does not work:
INCLUDE NA_SYSADMIN1 OBJECT DOKU ID TX LANGUAGE EN