If you report a problem with High Level Assembler to your IBM Support Center, you will receive a tape containing one or more APARs or PTFs to solve your problem.

You might also receive a list of pre-requisite APARs or PTFs, which should have been applied to your system before applying the current service. These pre-requisite APARs or PTFs might relate to High Level Assembler or any other licensed product you have installed, including z/VSE.

You apply service to High Level Assembler using either the z/VSE Interactive Interface or a batch job.

The following checklist provides a summary of steps you should use to apply service to High Level Assembler.