This parameter contains the text of the message that the logon processor will place in the first message area of the logon panel. You can change the message text in this exit using this parameter.

To use this parameter, the first message area must be present in the logon panel. If the first message area does not exist in the logon panel, the header for the first message is zero and this parameter is ignored.

A X'00' in the key field of this parameter entry signals the logon processor not to process the first message area parameter, even if the first message area exists in the logon panel.

If the key of this parameter entry is X'01', the logon processor will process the first message area. If there is text in this parameter, the text is placed in the first message area defined on the logon panel.