Oracle Message ORA-22898 - existing scope clause on string points to a table other than the one mentioned in the referential constraint

ERRORexisting scope clause on string points to a table other than the one mentioned in the referential constraint
CAUSETable mentioned in the referential integrity constraint is different from the scope table of the REF column.
ACTIONSpecify the scope table of the REF column in the referential integrity constraint and then retry the operation.