Communication errors

Distributed FileManager/MVS detects four types of communication errors:

A SEND ERROR was issued by the source. Distributed FileManager/MVS stops all processing in the conversation, but processing does not terminate.
APPC/MVS returns an unexpected error return code. Distributed FileManager/MVS logs the error into the system LOGREC file and terminates the conversation.
APPC/MVS returns an error code that indicates a system logic error in Distributed FileManager/MVS. See System logic errors for a description of processing in this case.
APPC/MVS indicates a DEALLOCATE ABEND of the source system. Distributed FileManager/MVS performs no error recording; it simply terminates the conversation.

If a source system attempts to communicate with an MVS system that has the Distributed FileManager/MVS installed but not active, an AGNPRMRM reply message with error code X'0021' (see Distributed FileManager/MVS general error codes) is returned to the source system.