Status code 502 Bad Gateway

Description The API, acting as a gateway or proxy to an API provided by a third party, received an invalid response from the upstream server.

HTTP/1.1 502 Bad Gateway
Content-Type: application/problem+json

{
  "type": "urn:problem-type:belgif:badGateway",
  "href": "https://www.belgif.be/specification/rest/api-guide/problems/badGateway.html",
  "status": 502,
  "title": "Bad Gateway",
  "detail": "Error in communication with upstream service"
}