This exit is used by the server runtime to enable changing the parameters required to issue the Server-to-Server request. TIRALLOX-RETURN must be set to spaces to indicate success or non-space to indicate failure. In case of failure, the FAIL-MESSAGE can be populated with a message that will be returned to the client.
The IMS implementation does not use the LOCAL-RMT_FLAG to identify the request as local or remote. Instead, it uses the CPI-C services of APPC/IMS and APPC/MVS as the communication mechanism for Server-to-Server requests and obtains the required information from the CPI-C Side Information File. This file is a VSAM KSDS data set with the Server Trancode name as key to the Symbolic Destination Entry. The Symbolic Destination Entry contains the PARTNER_LU name (the server node name), MODENAME (VTAM Logmode Table) and the TPNAME (trancode) required by APPC. If the PARTNER_LU is blank, the request is considered local, and APPC targets the same system as the current application, otherwise it uses the PARTNER_LU as the server node name for the Remote request. Modify the ALLOCATE-PARTNER-NAME as required by the application and configure the CPI-C Side Info File accordingly. IBM provides utility ATBSDFMU to customize the Side Info File.
Note: For more information about APPC/MVS, see the IBM Guide.
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