1. A computer-implemented method, comprising: receiving a request associated with a data object instance from a first business application, wherein the data object instance is of a specific data object type assigned to an assigned master business application; identifying, by operation of a computer, a second business application as the assigned master business application associated with the requested data object instance, wherein the first business application and the second business application are based on a common application platform, and wherein the second business application locks the requested data object instance from modification by business applications other than the first business application and provides a data connection to the first business application; and providing access to data associated with the requested data object instance at the second business application.