Multiple Applications

If multiple applications are using GETMSG in a TSO/E user's address space, the following guidelines should be followed to ensure that your application retrieves only the solicited messages destined for it:

Solicited and unsolicited messages should be explicitly requested. If you request only the oldest message, and the oldest message is solicited, it may not be destined for your application.
Solicited messages should be requested with a mask that contains X'FF' for at least the first 4 bytes and a CART that begins with a 4-character application identifier.

The user of the CONSOLE command must have also specified a CART that begins with a 4-character application identifier. See z/OS TSO/E System Programming Command Reference for specific guidelines about using the CART on the CONSOLE command to associate commands with their responses.

Note: At least one application should allow receiving of unsolicited messages.