DFS3827 MAXRGN KEYWORD PARAMETER IS MISSING OR INVALID

Explanation
 A /CHANGE TRANSACTION MAXRGN command
was rejected because the MAXRGN parameter was invalid or missing.
The MAXRGN parameter was invalid for one of the following reasons:

The MAXRGN parameter must be in the range of 0 and 255 inclusive.

Multiple MAXRGN parameters were entered.

System action
 The command is rejected.

Programmer response
 Correct the MAXRGN parameter; then reenter
the command.