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:
SampleAppCustomerOtherOperation *other = [[SampleAppCustomerOtherOperation alloc] init]; other.P1 = @"somevalue"; other.P2 = 2; other.P3 = [NSDate date]; [other save]; [other submitPending];