@OmarAlmonte, and another one to add to the tracker.
The Order By parameter does not have an “id” attribute.
https://developer.infusionsoft.com/docs/restv2/#tag/Opportunity/operation/listOpportunities
Hi Pav, this was a design decision; the recommended approach is ordering by created time.
Why the inconsistency? You can Order By Id on the Contact, Orders, and some of the other endpoints.