API Validation

422 UnprocessableEntity Unprocessable Entity

API Error REST 422

Your request was formatted perfectly (syntactically correct JSON), but Amazon couldn't process it because it didn't make logical sense—like trying to pause a campaign that is already permanently archived.

What causes this error?

Your request was formatted perfectly (syntactically correct JSON), but Amazon couldn’t process it because it didn’t make logical sense—like trying to pause a campaign that is already permanently archived.

How to fix it

Look closely at the detailed error sub-code in the response body. Amazon usually tells you exactly why the entity couldn’t be processed. Make sure the state transition you are requesting is actually allowed by Amazon’s business rules.

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