@Roger Young Currently, there is no way to do what you're asking if you're asking just for the attributes of flow files. The RPG transmits the entire flow file. One way to send only data with P1 attributes would involve using the Notify/Wait processors on the remote NiFi system. The main NiFi server would send a flow file, say for P1, then on the remote NiFi, you would use a RouteOnAttribute processor to send the P1 signal down the correct path to trigger the transmission of the "P1" data to the main NiFi and so for your different data types.
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