User IDs across systems

Platforms other than Windows, UNIX and Linux systems use uppercase characters for user IDs in messages. To allow Windows, UNIX and Linux systems to use lowercase user IDs in messages, the message channel agent (MCA) must carry out the appropriate conversions of alphabetic characters.

At the sending end

The alphabetic characters in all user IDs are converted to uppercase characters, if there is no message exit installed.

At the receiving end

The alphabetic characters in all user IDs are converted to lowercase characters, if there is no message exit installed.

The automatic conversions are not carried out if you provide a message exit on UNIX, Linux, and Windows for any other reason.