Before installing High Level Assembler, you should review the current Preventive Service Planning (PSP) information. If you obtained High Level Assembler as part of a CBPDO, there is HOLDDATA and PSP information included on the CBPDO tape.

If you obtained High Level Assembler on a product tape, or if the CBPDO is more than two weeks old when you install it, you should contact the IBM Support Center or use S/390® SoftwareXcel to obtain the current "PSP Bucket".

PSP Buckets are identified by UPGRADEs, which specify product levels, and SUBSETs, which specify the FMIDs for a product level. The UPGRADE and SUBSET values for High Level Assembler for z/OS are: