ICE424Addname (Fn) KEY IS OUT OF SEQUENCE

ddname (Fn) KEY IS OUT OF SEQUENCE
Explanation
Critical.  The SORTED operand was specified without
the NOSEQCK operand on the JOINKEYS statement associated with the
indicated ddname for file F1 or F2.  DFSORT checked the records of
the indicated file and found a record out of sequence for the keys
specified in the FIELDS operand of the JOINKEYS statement.

System action
The program terminates.

Programmer response
Remove the SORTED operand from the JOINKEYS
statement for the indicated file (F1 or F2) to force DFSORT to sort
that file by the specified keys.