BTS0503E ABEND DUE TO DISTRIBUTED ACCESS INFRASTRUCTURE INTERNAL ERROR.

Explanation
IMS Batch Terminal Simulator received an error from an internal API of
Distributed Access Infrastructure. This error condition is different from the other Distributed
Access Infrastructure API errors that are described by BTS0500E, BTS0501E, and BTS0502E
messages.

System action
IMS Batch Terminal Simulator ends with an abend code of U4076, U4077, or
U4078.

User response
Notify the IMS Batch Terminal Simulator support personnel of the
error.