Show TrackingOptionID in LineItem in Invoices API (and other endpoints)
The Invoices endpoint in particular (and many others in general), do not include the TrackingOptionID in the data set. Instead, they generally provide only the Name, Option and TrackingCategoryID.
It is really important for being able to use "joins" on the data to incl;ude the TrackingOptionID .
Richard Armstrong commented
The users can edit the options which means the text/ option can change over time even if the optionID is unchanged. If externally we can only use option then any relationships with external data using the categories become corrupted.