DOCUMENT:Q196607 13-JUN-2001 [sna] TITLE :CPIC Application Produces Event 3017 - CPIC Conversation Unknown PRODUCT :Microsoft SNA Server PROD/VER:WINDOWS:3.0,3.0 SP1,3.0 SP2,3.0 SP3,4.0,4.0 SP1 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft SNA Server, versions 3.0, 3.0 SP1, 3.0 SP2, 3.0 SP3, 4.0, 4.0 SP1 ------------------------------------------------------------------------------- SUMMARY ======= A Common Programming Interface for Communications (CPIC) application may produce event 3017: CPI-C conversation_ID unknown, in the Windows NT application event log. The CPIC application appears to be working fine, but this error may be produced every time the application is called. MORE INFORMATION ================ The application sends data to the host. After the application has finished sending the data, it changes the direction by issuing Receive verb. The host responds by returning data to the client AND deallocating the session. This can be seen in the node message trace snippet below: ----------------------------------------------- 14:30:51.0031 05160002->01020101 DLC DATA DAF:02 OAF:02 ODAI:on Normal RQE FMD EC DR1 CEB The CEB indicates that the host no longer cares about any conversation related matters. When the client receives this chunk of data, you need to inspect the return code on the verb. In this case, it's a CM_DEALLOCATED_NORMAL, which means the conversation has been deallocated normally, and no longer exists. The application then issues a Deallocate verb as shown below: ----------------------------------------------- 14:30:51.0062 CMDEAL request Conversation ID = 01000000 Conversation characteristics Deallocate type = CM_DEALLOCATE_SYNC_LEVEL Log data pointer = 00000000 Log data length = 0 The SNA Server, appropriately, responds with a Parameter Check because the conversation no longer exist, as shown below: ----------------------------------------------- 14:30:51.0062 CMDEAL response, result = CM_PROGRAM_PARAMETER_CHECK Summary of the Parameter Check ------------------------------ The application does not need to issue the CMDEAL CPIC verb. RESOLUTION ========== Change the application so it does not include the CMDEAL, and the event 3017s should stop. Additional query words: ====================================================================== Keywords : Technology : kbAudDeveloper kbSNAServSearch kbSNAServ300 kbSNAServ400 kbSNAServ300SP3 kbSNAServ300SP1 kbSNAServ400SP1 kbSNAServ300SP2 Version : WINDOWS:3.0,3.0 SP1,3.0 SP2,3.0 SP3,4.0,4.0 SP1 Issue type : kbinfo ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.