DOCUMENT:Q195165 25-OCT-2001 [sna] TITLE :SNA Print Server FMH5 ATTACH PIP Data is Corrupted PRODUCT :Microsoft SNA Server PROD/VER::3.0 SP2,4.0 SP1 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft SNA Server, versions 3.0 SP2, 4.0 SP1 ------------------------------------------------------------------------------- SYMPTOMS ======== In certain circumstances, especially under a high load, intermittent failure to establish SNA Print Server sessions configured to an AS/400 may occur. The Print Server session appears in a Pending state when viewed in the SNA Manager console, and in the Windows NT application log, event ID 60 may be logged: Event ID 60 Source SNA Server Description: Failed to invoke APPC TP "value" (0003), sense data = 080F6051 EXPLANATION: An attempt to invoke the APPC TP shown has failed. The error will be reported to the invoking TP on the remote system with the following primary return code: AP_ALLOCATION_ERROR. The sense data shown is the secondary return code, which will be one of the following hexadecimal values: X'084B6031' AP_TRANS_PGM_NOT_AVAIL_RETRY X'084C0000' AP_TRANS_PGM_NOT_AVAIL_NO_RETRY X'10086021' AP_TP_NAME_NOT_RECOGNIZED X'10086031' AP_PIP_NOT_ALLOWED X'10086032' AP_PIP_NOT_SPECIFIED_CORRECTLY X'10086034' AP_CONVERSATION_TYPE_MISMATCH X'10086041' AP_SYNC_LEVEL_NOT_SUPPORTED X'080F6051' AP_SECURITY_NOT_VALID ACTION Refer to the "Microsoft SNA Server APPC Programmer's Guide" for explanations. CAUSE ===== A problem with the conversion of Advanced Program-to-Program Communications (APPC) Program Initialization Parameters (PIP) data from ASCII to EBCDIC resulted in the data being processed twice. This caused the PIP data to be corrupted, which invalidated the security credentials necessary for successful Printer session establishment, subsequently causing the FMH5 ATTACH message to be rejected by the AS/400. RESOLUTION ========== SNA Server 3.0 -------------- To resolve this problem, obtain the latest service pack for SNA Server version 3.0. For additional information, please see the following article in the Microsoft Knowledge Base: Q184307 How to Obtain the Latest SNA Server Version 3.0 Service Pack SNA Server 4.0 -------------- This problem was corrected in the latest SNA Server version 4.0 U.S. Service Pack. For information on obtaining this Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces): S E R V P A C K STATUS ====== Microsoft has confirmed this to be a problem in SNA Server versions 3.0 Service Pack 2, 4.0, and 4.0 Service Pack 1. This problem was first corrected in SNA Server 3.0 Service Pack 4. MORE INFORMATION ================ SNA Server supports ASCII-EBCDIC character conversion because IBM host systems and SNA-capable systems use the EBCDIC character set. An application such as Print Server using the APPC interface must be able to convert these characters to and from the ASCII character set. SNA Server supports this capability using either: - The Common Service Verb (CSV) CONVERT and GET_CP_CONVERT_TABLE functions - The SNANLS API function for Windows NT 4.0 (or later), and Windows 95 clients For additional information, please refer to the following article in the Microsoft Knowledge Base: Q139114 SNA Server Support for ASCII-EBCDIC Character Conversion The SNA Server Tracing tool is used to capture SNA Application API traces for the CSV API. By tracing the CSV API, the CSV functions used to perform the ASCII-EBCDIC conversions can be captured; the trace demonstrates the problem, as shown below: --------------------------------------------------------------------- CSV CONVERT request CSV ---- Verb Parameter Block at address 60E0F9A0 ---- CSV 1A000000 00000000 00000000 00000A00 <................> CSV 94C0070C 94C0070C CSV ---- Data at address 0C07C094 ---- CSV 5052494E 54455220 2020 CSV --------------------------------------------------------------------- CSV CONVERT response, result = OK CSV ---- Verb Parameter Block at address 60E0F9A0 ---- CSV 1A000000 00000000 00000000 00000A00 <................> CSV 94C0070C 94C0070C CSV ---- Data at address 0C07C094 ---- CSV D7D9C9D5 E3C5D940 4040 CSV --------------------------------------------------------------------- CSV CONVERT request CSV ---- Verb Parameter Block at address 60E0F9A0 ---- CSV 1A000000 00000000 00000000 00000A00 <................> CSV 94C0070C 94C0070C CSV ---- Data at address 0C07C094 ---- CSV D7D9C9D5 E3C5D940 4040 CSV --------------------------------------------------------------------- CSV CONVERT response, result = PARAMETER_CHECK CSV ---- Verb Parameter Block at address 60E0F9A0 ---- CSV 1A000000 00010000 00000406 00000A00 <................> CSV 94C0070C 94C0070C CSV ---- Data at address 0C07C094 ---- CSV 00000000 0000007C 7C7C <.......||| > CSV --------------------------------------------------------------------- It can be seen that the 'PRINTER' ASCII data string is converted to EBCDIC. Then, when it's already in EBCDIC, it is inappropriately converted once more, which leads to corruption of the data string. Additional query words: ====================================================================== Keywords : Technology : kbAudDeveloper kbSNAServSearch kbSNAServ400SP1 kbSNAServ300SP2 Version : :3.0 SP2,4.0 SP1 Issue type : kbbug Solution Type : kbfix ============================================================================= 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.