The following OPEN ERROR can be encountered on VSAM managed work files on VSE:-
FB 0119 4228I FILE SYS006 OPEN ERROR X'42'(066) CAT=WKCATLG (OPNVC--1) DTF WITH INCOMPATIBLE FILE CHARACTERISTICS IN CATALOG
CA-Culprit, all releases, z/VSE only.
Incorrect value for profile parameter BT.
This error occurs most likely because the user has upgraded and has inadvertently changed to a different value for profile parameter BT.
Typically, the user was using a value other than 1 and has forgotten to implement that value in the new release and is now using the default of 1.
BT stands for blocks per track. If the BT value is too low, CA-Culprit will generate a blocksize which is too large for the file.
For more information on the CA-Culprit PROFILE parameters, see the manual "CA Culprit for CA IDMS Reference Guide" chapter 2 "PROFILE Parameter" and Appendix M "Profile Options".