# \[6099\] Unable to compute distance/duration matrix
**URL:** https://ask.openrouteservice.org/t/6099-unable-to-compute-distance-duration-matrix/2863
**Category:** openrouteservice
**Created:** [June 1, 2021, 6:45pm UTC](https://ask.openrouteservice.org/t/6099-unable-to-compute-distance-duration-matrix/2863 "2021-06-01T18:45:13Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Marcoshsc](https://ask.openrouteservice.org/u/Marcoshsc)
#### Post date: [June 1, 2021, 6:45pm UTC](https://ask.openrouteservice.org/t/6099-unable-to-compute-distance-duration-matrix/2863/1 "2021-06-01T18:45:13Z")
Hello guys, I use the ORS API services in multiple applications. Suddenly the matrix API stopped working for the foot-walking profiles. It works normally for the other profiles, but the foot-walking always return 6099 for the coordinates I am testing. Even in the ORS api playground, turning the path variable from driving-car to foot-walking makes the response to have only 0 distance/duration results, which is totally wrong and different from the driving-car values. My request test:
POST to [https://api.openrouteservice.org/v2/matrix/foot-walking](https://api.openrouteservice.org/v2/matrix/foot-walking)
JSON Body:
{“locations”:[[-44.02771,-19.844873],[-44.02771,-19.844873]],“destinations”:[0],“metrics”:[“distance”,“duration”],“sources”:[0],“units”:“m”}
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### Author:  [@amandus](https://ask.openrouteservice.org/u/amandus)
#### Post date: [June 2, 2021, 9:48am UTC](https://ask.openrouteservice.org/t/6099-unable-to-compute-distance-duration-matrix/2863/2 "2021-06-02T09:48:31Z")
Hi @Marcoshsc,
in the Playground the default locations are only working properly with the car profile, as the distances are greater than the [allowed distance](https://openrouteservice.org/restrictions/) for the foot profile.
A request with `{"locations":[[9.70093,48.477473],[9.207916,49.153868],[8.207916,49.153868]]}` as body seems to work fine.
So it seems the problem is related to your request coordinates.
Maybe something to do with negative values only…
We will [have a look](https://github.com/GIScience/openrouteservice/issues/966)
Best regards
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### Author:  [@Marcoshsc](https://ask.openrouteservice.org/u/Marcoshsc)
#### Post date: [June 4, 2021, 3:40pm UTC](https://ask.openrouteservice.org/t/6099-unable-to-compute-distance-duration-matrix/2863/3 "2021-06-04T15:40:31Z")
@amandus, thanks for your support. These coordinates are valid coordinates in a Brazilian city, and have 0 distance from each other. The problem is that the request returns the 6099 error with the foot-walking profile, and the other profiles, such as driving-car and driving-hgv returns the right results with no errors. I find it strange because two coordinates with zero distance should not give any error, considering that the other profiles work as expected. We use the ORS in a considerably big research project, and for now we have to use the driving-car profiles to make the applications work, even when the foot-walking profile is needed, because the issue seems to persist across Brazilian coordinates.
Best regards