Error when adding Business Unit - Purchase Orders

[guilhermeblima]

SDK you're using (please complete the following information):

• Xero.NetStandard.OAuth2 3.33.0

Describe the bug
When attempting to create a Purchase Order via the API, I consistently encounter the following validation error:

"Unknown tracking details. A Tracking Category did not match a known Active TrackingCategory."

1. I can confidently confirm that the tracking category used is valid, as it is successfully used for invoices within the system.

2. This error persists when using the API Explorer, which suggests that it's not an isolated issue on my end.

To Reproduce
Steps to reproduce the behavior:

1. Make a call to CreatePurchaseOrdersAsync with a LineItem containing a valid LineItemTracking
2. API returns the following error: "Unknown tracking details. A Tracking Category did not match a known Active TrackingCategory"

Expected behavior
The API should accept the valid tracking (Business Unit) details without triggering a validation error.

Additional context
I've noticed a similar issue here
Example payload:
{ "PurchaseOrders": [ { "Contact": { "ContactID": ContactID }, "LineItems": [ { "Description": "Purchase Order - Terms and Conditions, "UnitAmount": 1.0000, "TaxType": "INPUT2", "TaxAmount": 0.15, "LineAmount": 1.00, "AccountCode": "811", "Tracking": [ { "TrackingCategoryID": TrackingCategoryID, "TrackingOptionID": TrackingOptionID "Options": [], "ValidationErrors": [] } ], "Quantity": 1.0000, "ValidationErrors": [] } ], "Date": "2023-09-18" } ] }

[github-actions]

PETOSS-348

[github-actions]

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