DFS2700A MORE THAN 255 MSDBS DEFINED

Explanation
 The number of possible main storage databases
(MSDB) in IMS was exceeded. The maximum number of MSDBs
that can be specified is 255.

System action
 IMS terminates with abend 1012.

Programmer response
 Reduce the number of MSDBs in MSDB member
DBFMSDBn in the IMS PROCLIB