FAQ

Frequently Asked Questions

What does 'Engine error while executing route request: STOPPED' mean?

Requests in the Matrix Routing v2 API are forcefully canceled once they exceed some internal compute time limit (currently around 30 seconds) in order to avoid resource starvation scenarios.

The Matrix Routing v2 API returns the following cell processing error:

1{
2  "originIndex": 0,
3  "destinationIndex": 0,
4  "detailedError": {
5    "code": "CELL_PROCESSING_ERROR",
6    "message": "Cell could not be processed",
7    "innerError": {
8      "code": "NO_ROUTE_FOUND",
9      "message": "Engine error while executing route request: STOPPED: The request exceeded the internal compute time limit and was canceled. For more information, go to: https://developer.tomtom.com/routing-api/documentation/product-information/faq"
10    }
11  }
12},

A request was canceled, or the response time is long. How can I reduce the response time?

The length of the resulting route for a route calculation, and respectively the resulting area for a reachable range calculation have the largest direct impact on the time it takes to compute them.

In addition most routing / range options have some impact on compute time.
The default options produce fast responses. Using non-default options typically increases the response time.

The following options have a big impact on the response time:

Matrix Routing v2:

• any avoid options, in particular tollRoads
• routeType set to shortest,
• travelMode set to pedestrian
• vehicleMaxSpeed less than 60