pd-name

    The name of the procedure descriptor. This name can be up to 31
    characters long. It cannot be a temporary label.

 ca-name

    The name of the code address that corresponds to the procedure
    descriptor. This name must be defined later in the program as
    a label in a psect that has either the EXE or MIX attribute, or
    both. This name can be up to 31 characters long. It cannot be a
    temporary label.