KLVVT507 UNABLE TO OPEN VPO ACB: R15(r15) ACBERFLG(acberflg) APPLID(applid)
Explanation
An error was detected upon execution of an z/OS® OPEN macro instruction for the VPO ACB.
System action
The TMS:Engine programmed operator facility (VPO) is unavailable.
User response
Consult the IBM® z/OS Communications Server SNA Programming to determine the cause of the error and take appropriate corrective action.
Message Type
WARNING