IMS id missing for request to read IMS unload file
A data map that requests a read of an IMS unload file does not include an IMS SSID. The library from which to load the DBD is specified through a combination of information from the IMS SSID and the DBMOVER IMSID parameters.
The task that encountered the error ends.
If you are using a DL/1 Batch data map, add an IMS SSID to the data map. If you are using an IMS ODBA data map, the IMS SSID should already be present. Also, verify that the IMSID parameter in the DBMOVER configuration member specifies the DBD library for the IMS subsystem.