ASMZ013T Control statement READ error.

Explanation
 ASMXREF was
unable to read the file containing the control statements.

System action
 The ASMXREF run
terminates.

Programmer response
 Examine the system or job logs to determine
why the control statement file could not be read. There may be system
error messages indicating an open or read error on this file. Consult
your Systems Programmer for assistance.