User IDs across systems
Platforms other than AIX®, Linux®, and Windows systems use uppercase characters for user IDs in messages. To allow AIX, Linux, and Windows systems to use lowercase user IDs in messages, the message channel agent (MCA) must carry out the appropriate conversions of alphabetic characters.
To allow AIX, Linux, and Windows systems to use lowercase user IDs in messages, the following conversions are carried out by the message channel agent (MCA) on these platforms:
- 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 AIX, Linux, and Windows for any other reason.