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1. Show TrackingOptionID in LineItem in Invoices API (and other endpoints)

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   7 comments  ·  Accounting API  ·  Delete…  ·  Admin →
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   Chintan Prajapati commented  ·  Feb 13, 2026  ·  Edit…  ·  Delete…

   I can confirm that the original issue is SOLVED - TrackingOptionID is now being returned correctly in the API response when fetching a single invoice.
   However, I've discovered a new bug: the API only returns 1 tracking category per line item when 2 are assigned. I tested this in API explorer for Demo Organization.
   Test Case (Invoice INV-0028):

   Xero UI shows 2 tracking categories: Region + Project
   API response returns only Region
   Project tracking category completely missing

   Since Xero allows up to 2 tracking categories per line item, the API should return both. Currently it's dropping the second one.

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