Can't create an observations POST request, getting 409 error

[Vaibhav Dixit]

I have been trying to POST height vital since the sandbox patients seem to randomly stop having the field. This has also been tried out by some other colleagues of mine but we can't figure out what we are doing wrong and keep getting the below error

```

ERROR: HTTP.ExceptionRequest.StatusError(409, "POST", "/r4/ec2458f2-1e24-41c8-b71b-0e701af7583d/Observation", HTTP.Messages.Response:
"""
HTTP/1.1 409 Conflict
Content-Type: application/fhir+json; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Date: Wed, 01 Mar 2023 16:18:47 GMT
Cache-Control: no-cache
Server-Response-Time: 791.095807
Vary: Origin
X-Request-Id: 17a8f8ca-346a-40fc-aeb8-80318c007f9e+qod3_a2Py
X-Runtime: 0.791050
X-Cache: Error from cloudfront
Via: 1.1 c5c765aebb2dd2619f012f31ce7235e8.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: BLR50-C3
X-Amz-Cf-Id: WjFdXCjr2ZFc8sNBbOQLRc9mkwDwX9U6P55G4sbb5WOc9oeeXDGAFg==

{"resourceType":"OperationOutcome","issue":[{"severity":"error","code":"conflict","details":{"text":"Current state of resource in conflict"}}]}""")

```

Any insights?

[Ionut Balan Oracle Cerner]

Looking at the logs found this: Conflict: Vital contains an external identifier code for the system https://fhir.cerner.com/ceuuid that has already been written for a different result;

Hope this helps.