The request is specified in a string parameter. The request type must be the first keyword in the parameter string. If a valid request type is not the first keyword, or if a request type is not specified, the request type defaults to ALLOC.

The following request types are supported:

ALLOC

Dynamic allocation of a data set

CONCAT

Dynamic concatenation of a ddname list

DECONCAT

Deconcatenation of a ddname list

FREE

Dynamic unallocation of a ddname, or freeing of an output descriptor

INFO

Retrieval of allocation information

OUTDES

Creation of an output descriptor