Use this section to build the modifier keywords that can include function, subfunction, or other modifying information. The modifier keywords are optional but might be necessary to restrict the scope of a software database search to a reasonable number of matches. Use them to describe the unique characteristics of the failure.
You can often identify the failing function and subfunction when you determine the type-of-failure. You might be able to identify a failure-related general register or control block (invalid data, same value every time the failure occurs, and so forth). You should be able to identify the probable failing component from a failure-related indication (message, unique abend code, and so forth).