VSM-2830-00-E AMB VSAM error - REQID keyword is invalid with the APS option of &ampVS-ENDBR-CONTROL Must use USER option

The REQID keyword (indicating a simultaneous browse operation) is valid only when the control variable &VS-ENDBR-CONTROL is set to USER.
Restriction: This topic applies only when the AppMaster Builder AddPack has been installed, and applies only to Windows platforms.

Resolution:

You can change &VS-ENDBR-CONTROL in the control file APSCNTL(APVSAMIN).