BSYR464E The first character of the IMS subsystem id must be
alphabetic or a national character.
Explanation
The backup was not available for rename or delete processing. An invalid value was
entered for the IMS subsystem ID. A IMS subsystem ID can be from 1 to 4 characters in length and must be specified
as follows: the first character must be must be an alphabetic or a national character and the
remaining characters must be alphabetic, numeric or a national character.
User response
Correct the invalid value.