To ensure the best quality, each record is indexed by two people: an A indexer and a B indexer. When both the A and B indexing have been completed and submitted, the system compares the two versions. If there are any differences, the batch is sent for arbitration.
An arbitrator compares the differences with the document image and either selects the most correct version or types in a new value that more accurately reflects what is on the image.
Arbitration is a necessary step. A project is not complete until all batches with discrepancies have been reviewed by an arbitrator. The information you submit is published on the FamilySearch Web site.