If you send master data directly, a function module creates an IDoc for each master data object, for example, material. In most cases more than one master data object can be passed to the function modules for IDoc creation.
If you send master data directly, you can send more master data objects in each process. As a guide you can send between 20 and 100 objects. This reduces the number of dialog processes used and the administrative load on the SAP system.
Packet processing and parallelism complement one another. Packet processing and parallelism complement each other, although in some situations they may compete with each other. If there are too many master data objects in each process, possibly not all available dialog processes will be used.