VSM-2900-00-E AMB VSAM error - &ampVS-ENDBR-CONTROL option must have APS value to use ALL keyword

The control variable &VS-ENDBR-CONTROL must be set to AMB to use the DB-FREE keyword ALL.
Restriction: This topic applies only when the AppMaster Builder AddPack has been installed, and applies only to Windows platforms.

Resolution:

Use separate DB-FREE calls for each file, or change the value of &VS-ENDBR-CONTROL to AMB in APSCNTL(APVSAMIN).