Question

You are building a nightly console application that synchronizes Account records from Dataverse to an external reporting database. Change tracking is enabled on the Account table. On the very first run, your code calls RetrieveEntityChangesRequest without supplying a DataVersion (delta token). What happens, and what should your code do to prepare for future incremental runs?

Accepted Answer

Dataverse returns a full snapshot of all Account records, and you should persist the returned EntityChangesResult.DataToken to pass as DataVersion on the next run.

Answer

The request fails because a DataVersion token is mandatory; you must first call a separate initialization API before any changes can be retrieved.

Answer

Dataverse returns only records modified in the last 24 hours, so you must run the sync repeatedly on the first day to capture older records.

Answer

The request returns no records until at least one Account is modified after change tracking is enabled, so the initial database load must be done manually.