The layout of the CA-ACF2 BKLIDS file is the same as the CA-ACF2 VSAM file. This layout is defined via the LIDREC DSECT that can be found in the CAX1MAC0 library. There is a mapping macro called ACFDLIST which can be found in the CA-ACF2 CAX1MAC0 library that will provide the layout of the logonid record. This macro is in the CA-ACF2 macro dataset. Layouts/DSECTs for the BKRULES and BKINFO are not available because they are considered proprietary.