What Causes a 409 Status Code and How Do You Resolve It? or Getting a 409 Status Code – What’s the Co

Man, I feel you. The 409 status code is so vague.

For me, it was a timestamp thing—my client was sending old data, and the server was like "nope."

Try adding `Last-Modified` headers or use a tool like Swagger UI to debug the request/response cycle. Might save you some hair-pulling.