If you are not already using APPC/MVS, you must allocate a VSAM KSDS in the system library (for example, SYS1.APPCTP) where APPC/MVS TP profile information can be stored. The name of the VSAM KSDS data set must match the name defined in system PARMLIB member APPCPMxx. A sample of allocating the VSAM KSDS is in system SAMPLIB member ATBTPVSM (for example, SYS1.SAMPLIB(ATBTPVSM)).

For more information on allocating a VSAM KSDS, see z/OS DFSMS Access Method Services Commands.