Fix HTTP 500 error on updating same task instance state via FastAPI PATCH taskinstance/{task} endpoint #45288
+50
−4
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During AIP-84 testing, we noticed an HTTP 500 error when providing the same task state for the FastAPI PATCH taskinstance/{task} endpoint.
In comparison, the legacy API does not exhibit this issue. Upon investigation, the failure occurs on this line. When the same state is provided, the tis_altered variable returns None, which results in tis also being None.
Further inspection revealed that ti should actually be tis. Additionally, since HTTP 404 is already handled here, it would be more appropriate to raise an HTTP 409 error in this case.
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