BTS0018W OPEN FAILED FOR INPUT (BTSIN) DATA SET.

Explanation
 The BTSIN
data control block could not be successfully
opened by IMS Batch Terminal Simulator.

System action
 IMS Batch Terminal Simulator ends normally.

User response
 Check the DD statement in the JCL or the ALLOC statement in the CLIST for BTSIN. Correct and
rerun the job. See z/OS® DFSMS Macro Instructions for Data Sets for the probable
cause of the OPEN errors. 