Not acceptable. This occurs when you request data using an Accept header that’s unsupported.
This sample 406 error represents an attempt to create a CA set with the wrong Accept header.

Content-Type: application/problem+json;charset=UTF-8
 
{
  "detail": "Could not find acceptable representation. Allowed media types are [application/vnd.akamai.mtls-edge-truststore.ca-set.v1+json;charset=UTF-8].",
  "instance": "/mtls-edge-truststore/error-types/media-type-not-acceptable?r=-5881589910143696778",
  "status": 406,
  "title": "Could not find acceptable representation.",
  "type": "/mtls-edge-truststore/error-types/media-type-not-acceptable",
  "unsupportedMediaType": "application/akamai.v1+json;charset=UTF-8",
  "allowedMediaTypes": [
    "application/vnd.akamai.mtls-edge-truststore.ca-set.v1+json;charset=UTF-8"
  ]
}