What is Field Mapping in integration between Pipedrive and Vtiger CRM?

Field Mapping is systematically matching fields between two applications so that data sync smoothly between the two. Field mapping matches source and target fields and syncs data from one application to another.
Improper or incomplete mapping can prevent the sync process from skipping a few records and failing to update information. For example, a mandatory field in Pipedrive might have data, and the mapped non-mandatory field in Vtiger might be empty. In this case, the sync process is unsuccessful.