Everything but the Kitchen ... Sync!

6. Establish a data dictionary to standardize definitions and language between systems.

7. Set the mapping document aside for a few days, and go back with fresh eyes.

8. Determine who needs to provide feedback: development staff for major donors, assuming they aren’t a part of the core group; affiliate leadership if you are syncing affiliate data; your sustainer program manager, etc. Then give them a chance to provide it!