In V3, this will be possible using 'sparse update' operation. But in V2 APIs, this operation is no supported.
V3 docs - https://developer.intuit.com/docs/0025_quickbooksapi/0050_data_services/v3
V3 Early Access pgm - https://developer.intuit.com/blog/2013/06/21/application-is-live-v3-early-adopter-program-july-group/
Thanks