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Currently there are 2 APIs we could use to retrieve the Audit data at Dynamics Customer Engagement:
1. RetrieveAuditDetails Function: https://docs.microsoft.com/en-us/dynamics365/customer-engagement/web-api/retrieveauditdetails?view=dynamics-ce-odata-9, the issue with this is that there are no old value and new value
2. RetrieveRecordChangeHistory Function: https://docs.microsoft.com/en-us/dynamics365/customer-engagement/web-api/retrieverecordchangehistory?view=dynamics-ce-odata-9, this API returns old value and new value, however the issue with this is that we don't have event time and audit id (used for filtering)

It would be great if we could have one API which would have all those information. Thanks.
STATUS DETAILS
Needs Votes
Ideas Administrator

Thank you for your feedback. Currently this is not in our roadmap; however, we are tracking it and if we get more feedback and votes, we may consider it in the future. 

Sincerely,
Paramita Chatterjee
PM, Microsoft.