Operations other than create, update, or delete operations are called "other" operations. An Other operation class is generated for each operation in the MBO that is not a create, update, or delete operation.
This is an example of an "other" operation:
SMP101CustomerChangeLastNameOperation *op = [SMP101CustomerChangeLastNameOperation getInstance]; op.old_lname = @"Smith"; op.new_lname = @"Jones"; [op save]; [op submitPending]; [SMP101SMP101DB synchronize];