Another cause for nonselection of an object during OSMC processing might be that the collection entry for the collection ID associated with the storage group being processed cannot be found in the collection table of the object directory.
SELECT * FROM OAMADMIN.CBR_COLLECTION_TBL C, HLQ.OSM_OBJ_DIR D
WHERE ODNAME = 'object_name'
AND D.ODCLID = C.ODCLID;
One row should be returned from the collection table identifying the collection that is expected to be associated with the object. If there is no collection table entry, the object is not selected for processing.