I am testing an appc connection to an AS/400 (v5r4) from another AS/400 (v5r4), and receive a cpd3B58 when i issue a vfyappccnn:
Message ID . . . . . . : CPD3B58
Date sent . . . . . . : 03/19/14 Time sent . . . . . . : 15:25:50
Message . . . . : Remote system abnormally ended conversation A.
Cause . . . . . : The remote system ended the conversation abnormally. The
Systems Network Architecture (SNA) sense data is 08640000.
Recovery . . . : If the program is using commitment control and rollback is
required, the logical unit of work must be rolled back. Use the rollback
operation to roll back any pending changes made since the last commitment
boundary. Contact the remote system operator to determine the cause of the
failure. Then try the request again. If the problem continues, report the
problem (ANZPRB command).
Technical description . . . . . . . . : Descriptions of SNA sense data are
available in the SNA Formats manual, GA27-3136 and the APPN Support topic in
the Information Center book, http://www.ibm.com/eserver/iseries/infocenter
Press Enter to continue.
I have a third AS/400 that communicates successfully.