Concepts and technologies for offline modification of business data are disclosed. A client device caches a cached version of business data. A business connectivity services (“BCS”) application executing on the client device reviews modifications made to the cached version of the business data and generates one or more operations corresponding to the modifications. The BCS application maintains a queue of operations. The BCS application reviews the operations in the queue and combines or removes operations that can be combined or removed without affecting the dependencies between related operations. The client device accesses a business data server that hosts the business data, and transmits the operations to the business data server in the determined order.