Team,
Currenlty, There is a chance of getting duplicate records inserted via S3 Ingest Job because if the source file contains multiple records with the same key values are inserted on particular insertion when there is no records with that key value in that object. The upsert key will be checking if there are existing records and then it will be updating the existing data. Upsert key doesn't check the source file if it contains the duplicates or not. Can we validate the source file based on the upsert key value and remove duplicates before inserting in MDA object