Understanding how existing engagement systems will interact with Planet 4 it's key to visualize how and which data will be sent from / to the platform, to get any level of profiling or contact merge in database of records.
The drawing below should be familiar to all digital people in any NRO.
To do / update your NRO map of System’s integration:
As example, below is the systems mapping exercise done by our Greek colleagues (and here’s the Drawing):