3427446 - CALL_FUNCTION_SEND_ERROR and CALL_FUNCTION_ACCEPT_FAILED shortdumps: Conversation <nr> not found

In ST22 there is a short dump  CALL_FUNCTION_SEND_ERROR :

Short text                                                                                     
"Conversation <nr1> not found" (I/O error)   
"CPIC-CALL: 'ThCMSEND' : cmRc=19 thRc=728 Conversation ID not found "

In the RFC gateway trace file (dev_rd)

GwIFreeDiscConn: delete conversation <nr1> (conn=60) in state DISCONNECT

some time later:

*****************************************************************************
*
*  LOCATION    SAP-Gateway on host <hostname> / sapgw<instance number>
*  ERROR       Conversation <nr1> not found

There is a similar scenario when the RFC Gateway is the server of the connection (that is, when external programs are connecting to it). In that case, the CALL_FUNCTION_ACCEPT_FAILED dump occurs.

SAP Netweaver
ABAP Platform

KBA , BC-CST-GW , Gateway/CPIC , BC-ABA-LA , Syntax, Compiler, Runtime , Problem