Parameter type: Keyword, optional

Purpose: The purpose and use of this keyword is defined by the installation. Refer to your installation's definition on the intent and use of this keyword.

If your installation does not define any use for this keyword, the information will be checked for syntax, stored as part of the output descriptor's information, and will then be ignored.

Networking considerations: The use of the USERDATA keyword on one network node can be different from the use on another network node. An installation will have to coordinate any sending and receiving nodes to make use of the USERDATA keyword.

References: Refer to the z/OS MVS JCL User's Guide, section “SYSOUT Resources—USERDATA OUTPUT JCL Keyword” for more details on how this keyword may be used.