DFS564I DMB dmbname1 REFERENCES UNKNOWN DMB dmbname2, DMB STOPPED
Explanation
The first data management block contains a reference to the second data management block. The second data management block was not specified at system definition time.
System action
A BMP region terminates with abend 0458. A batch DBB region terminates with abend 0821. If the message was issued during IMS initialization, execution continues, but the first data management block is marked as unusable.
Programmer response
Correct the data management block or the system definition.