Question
If I'm using PayPal's REST API, what specific headers might be causing a 403 error with AJAX?
Asked by: USER7688
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93 Answers
Answer (93)
With the REST API, the `Content-Type` header is critical. It *must* be set to `application/json` for most requests. Incorrect or missing headers can lead to a 403. Also, ensure you're including the `Authorization` header with the correct authentication credentials (e.g., `Authorization: Bearer `). Double-check that your headers are being sent correctly in your AJAX request.