AP_TP_Name_Not_Recognized with DBCS and Single Signon

ID: Q165225

The information in this article applies to:

Microsoft SNA Server, version 3.0

SYMPTOMS

When allocating a 5250 conversation using a double byte character set (DBCS) code page and the single signon feature, the following advanced program-to-program communications (APPC) return code may result:

Primary Return Code: 0003 AP_ALLOCATION_ERROR
Secondary Return Code: 10086021 AP_TP_NAME_NOT_RECOGNIZED.

The partner LU does not recognize the TP name specified in the allocation request.

The following trace excerpt shows the TP name being 0x066F646E:


APPC   ---------------------------------------------- 17:43:27.20
APPC   MC_ALLOCATE request
APPC
APPC   Type:Sync                                  VerbID:00001400
APPC
APPC   ---- Verb Parameter Block at address 0210FB54 ----
APPC   01000100 00000000 00000000 00000000     <................>
APPC   B86A1A00 08801B00 00000000 00000000     <.j..............>
APPC   00000000 00000000 53313030 35444341     <........S1005DCA>
APPC   D8D7C3E2 E4D7D740 066F646E 40404040     <QPCSUPP@.odn@@@@> <-.odn
APPC   40404040 40404040 40404040 40404040     <@@@@@@@@@@@@@@@@>
APPC   40404040 40404040 40404040 40404040     <@@@@@@@@@@@@@@@@>
APPC   40404040 40404040 40404040 40404040     <@@@@@@@@@@@@@@@@>
APPC   40404040 40404040 02000000 00000000     <@@@@@@@@........>
APPC   00000000 E2C8E4C9 C3C8C940 4040E2C8     <....SHUICHI@@@SH>
APPC   E4C9C3C8 C9404040 00000000 00000000     <UICHI@@@........>
APPC   00000000 00000000 00000000 00000000     <................>
APPC   00000000 00000000 00000000              <............    >

The following is the return from the remote system after the allocate was sent to the AS/400:


APPC   ---------------------------------------------- 17:43:40.25
APPC   MC_RECEIVE_AND_WAIT response, result = ALLOCATION_ERROR
APPC
APPC   Type:Sync                                  VerbID:00004400
APPC
APPC   ---- Verb Parameter Block at address 0210FBE0 ----
APPC   0B000100 00030000 10086021 00000000     <..........`!....>
APPC   00000000 28FC1002 00000000 00000000     <....(...........>

CAUSE

This problem occurs when you use WideCharToMultiByte() API on DBCS platforms.

RESOLUTION

To resolve this problem, obtain the hotfix mentioned below.

A change was made to Sec400.dll so that the WideCharToMultiByte () API is not used to convert the EBCDIC TP name.

STATUS

Microsoft has confirmed this to be a problem in SNA Server version 3.0. This problem was corrected in the latest Microsoft SNA Server 3.0 U.S. Service Pack. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words:

Keywords : kbnetwork prodsna snaappc kbbug3.00 kbfix3.00.sp1
Version : WINDOWS:3.0
Platform : WINDOWS
Issue type : kbbug