You are developing a Power Platform solution. The solution connects to a third-party accounting system by using a Web API through a Power Apps app that automatically exchanges contacts with the sales

The `odata.track-changes` preference header, when used with OData Web API requests, enables the delta query functionality, allowing the client to retrieve only the changes (creations, updates, and deletions) that have occurred since the last request. This ensures that only unsynchronized data is exchanged, optimizing data transfer.

The `odata.allow-entityreferences` header is used to allow entity references in a request body, typically for creating relationships between entities, not for tracking data changes.

The `odata.include-annotations` header is used to request that specific annotations, such as formatted values or lookup property names, be included in the response, not for managing data synchronization of changes.