Routing API resulting in 500 Internal Server Error

Question

We need to find the shortest road distance between two points and are utilizing the avoid ferries properties in our requests, however we are finding that some ferries are causing a 500 Internal Server Error response from the API.

POST: https://atlas.microsoft.com/route/directions?api-version=2025-01-01&subscription-key={{subscriptionKey}}

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "geometry": {
        "coordinates": [
          -86.2791608,
          43.9528082
        ],
        "type": "Point"
      },
      "properties": {
        "pointIndex": 0,
        "pointType": "waypoint"
      }
    },
    {
      "type": "Feature",
      "geometry": {
        "coordinates": [
          -87.821335,
          44.1444086
        ],
        "type": "Point"
      },
      "properties": {
        "pointIndex": 1,
        "pointType": "waypoint"
      }
    }
  ],
  "optimizeRoute": "shortest",
  "avoid": [ "ferries" ],
  "routeOutputOptions": [ "routeSummary" ]
}

This was an example that I found that pretty consistently failed for me that by the shortest distance would use the Ludington-Manitowoc ferry across Lake Michigan. If I remove the avoid ferries property, this exact request would work and I would get a response from the API. However, since I need to avoid ferries, the API has been responding with 500 Internal Server Error.

The headers and response are below.

Name	Value
transfer-encoding	chunked
content-type	application/json; charset=utf-8
vary	Accept-Encoding
x-ms-azuremaps-region	East US
x-content-type-options	nosniff
strict-transport-security	max-age=31536000; includeSubDomains
traceid	62d8542e0d9441d393c23b840fa1aecb
x-cache	CONFIG_NOCACHE
x-msedge-ref	Ref A: 62D8542E0D9441D393C23B840FA1AECB Ref B: ATL331000108037 Ref C: 2025-05-28T19:30:32Z
date	Wed, 28 May 2025 19:30:43 GMT

{
  "error": {
    "code": "InternalServerError",
    "message": "An error occurred while processing the request. Please try again later."
  }
}