# Mapillary (V4) API - Map feature search - OAuthException **URL:** \ **Category:** Imagery, data, and integrations\ **Created:** [February 1, 2022, 1:00pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793 "2022-02-01T13:00:04Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![aromanov](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.mapillary.com/aromanov/32/71526_2.png) [@aromanov](https://forum.mapillary.com/u/aromanov)\ **Post date:** [February 1, 2022, 1:00pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/1 "2022-02-01T13:00:04Z")
Hey! I’m wondering what possible reasons could be behind the following exception? ```auto { "error": { "message": "An unexpected error has occurred. Please retry your request later.", "type": "OAuthException", "is_transient": true, "code": 2, "fbtrace_id": "AS26d006E6BBsmkJJnBUXnZ" } } ``` Here is the URL I am trying to request: ```auto https://graph.mapillary.com/map_features?fields=id%2Cgeometry%2Caligned_direction%2Cobject_value%2Cobject_type&start_first_seen_at=2021-01-01T00%3A00%3A00%2B0000&end_first_seen_at=2022-01-01T00%3A00%3A00%2B0000&start_last_seen_at=2021-01-01T00%3A00%3A00%2B0000&end_last_seen_at=2022-01-01T00%3A00%3A00%2B0000&object_values=regulatory--maximum-speed-limit-%2A%2Cregulatory--end-of-maximum-speed-limit-%2A%2Cregulatory--speed-limit-zone-%2A%2Cregulatory--end-of-speed-limit-zone-%2A%2Cregulatory--end-of-prohibition-%2A&access_token=&limit=2000&bbox=-101.25%2C36.59788913307021%2C-95.625%2C40.97989806962013 ``` Sometimes the response contains a valid result that looks as follows: ```auto { "data": [ { "id": "1282906358808750", "geometry": { "type": "Point", "coordinates": [ -96.937176085639, 40.821923767334 ] }, "aligned_direction": 104.43353291653, "object_value": "regulatory--maximum-speed-limit-75--g2", "object_type": "trafficsign" }, ... { "id": "276937214262912", "geometry": { "type": "Point", "coordinates": [ -96.416872969551, 39.711468384362 ] }, "aligned_direction": 188.0721253321, "object_value": "regulatory--maximum-speed-limit-55--g2", "object_type": "trafficsign" } ] } ``` But in most cases, the exception mentioned above is returned. ---
**Author:** ![aromanov](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.mapillary.com/aromanov/32/71526_2.png) [@aromanov](https://forum.mapillary.com/u/aromanov)\ **Post date:** [February 1, 2022, 1:06pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/2 "2022-02-01T13:06:39Z")
Hi @chrisbeddow ! As a Mapillary API expert, could you please help us figure out what the possible reasons could be behind the exception mentioned above? ---
**Author:** ![aromanov](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.mapillary.com/aromanov/32/71526_2.png) [@aromanov](https://forum.mapillary.com/u/aromanov)\ **Post date:** [February 1, 2022, 1:15pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/3 "2022-02-01T13:15:42Z")
The exception says: “Please retry your request later”. Sometimes it helps. But, for example, similar request for bbox=2.8125%2C50.73645513701065%2C5.625%2C52.48278022207821 fails all the time. ---
**Author:** ![eserte](https://avatars.discourse-cdn.com/v4/letter/e/67e7ee/32.png) [@eserte](https://forum.mapillary.com/u/eserte)\ **Post date:** [February 1, 2022, 4:47pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/4 "2022-02-01T16:47:19Z")
v4 API calls fail for me since 2022-01-27. Maybe something’s broken on Mapillary side. ---
**Author:** ![eserte](https://avatars.discourse-cdn.com/v4/letter/e/67e7ee/32.png) [@eserte](https://forum.mapillary.com/u/eserte)\ **Post date:** [February 1, 2022, 4:54pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/5 "2022-02-01T16:54:16Z")
… and while writing this it mysteriously works again… ---
**Author:** ![eserte](https://avatars.discourse-cdn.com/v4/letter/e/67e7ee/32.png) [@eserte](https://forum.mapillary.com/u/eserte)\ **Post date:** [February 1, 2022, 9:58pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/7 "2022-02-01T21:58:14Z")
Unlikely that this will help. I get this kind of error responses more or less regular when accessing the /images endpoint, and the advice “An unexpected error has occurred. Please retry your request later.” helps — exactly the same request will get a response sooner or later. However, the v4 API got very unreliable the last days (starting last Saturday) and one must be currently very patient to get successful responses. ---
**Author:** ![bjor](https://avatars.discourse-cdn.com/v4/letter/b/e19b73/32.png) [@bjor](https://forum.mapillary.com/u/bjor)\ **Post date:** [February 1, 2022, 10:19pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/9 "2022-02-01T22:19:58Z")
+1 This also happens to me. My script is doing nowhere near 50k requests per minute. Even when just test hitting the endpoint using Postman, I’ll get this error. ---
**Author:** ![reichg24](https://avatars.discourse-cdn.com/v4/letter/r/5f8ce5/32.png) [@reichg24](https://forum.mapillary.com/u/reichg24)\ **Post date:** [February 1, 2022, 10:25pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/10 "2022-02-01T22:25:06Z")
+1 for me as well. Along with this the V3 API allowed us to get data on a country wide basis but now using tiles in V4, this request is pretty infeasible. Have tried using the map\_features from the graph endpoint and the tiles enpoint. Any suggestions on how to get data on a country wide basis? @chrisbeddow ---
**Author:** ![eserte](https://avatars.discourse-cdn.com/v4/letter/e/67e7ee/32.png) [@eserte](https://forum.mapillary.com/u/eserte)\ **Post date:** [February 1, 2022, 10:36pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/11 "2022-02-01T22:36:11Z")
> [@GITNE](#): > > However, you may be hitting a request limit if you are making _a lot_ of requests in a short period of time. It’s often the very first request after 24h which fails in this way. I think we can rule out request limits, unless there is some kind of _global_ rate limit for all of mapillary. ---
**Author:** ![chrisbeddow](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.mapillary.com/chrisbeddow/32/844_2.png) [@chrisbeddow](https://forum.mapillary.com/u/chrisbeddow)\ **Post date:** [February 2, 2022, 8:40am UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/12 "2022-02-02T08:40:00Z")
@eserte @reichg24 @bjor@aromanov I see you are including the access token in the URL. It is best to send it in the header of your request. For everyone, I recommend using this bbox approach, but it returns only up to 2000 items of data. If you are doing a country level and it is a big country, then you should first figure out the zoom 14 tiles (14/x/y) you need for the whole country, then you want to download them all. Try the Mapillary Python SDK for this if you’re using Python: [mapillary.interface | Mapillary Python SDK](https://mapillary.github.io/mapillary-python-sdk/docs/mapillary/mapillary.interface#mapillaryinterfacemap_feature_points_in_bboxbbox-dict-filter_values-list--none-filters-dict) ---
**Author:** ![aromanov](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.mapillary.com/aromanov/32/71526_2.png) [@aromanov](https://forum.mapillary.com/u/aromanov)\ **Post date:** [February 2, 2022, 11:17am UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/13 "2022-02-02T11:17:56Z")
Hi @chrisbeddow ! Thank you for your recommendations! I’m using a map feature search because I need filtered results for a large area. I mean, I’m trying to reduce the number of requests needed to get the data I’m interested in. Here is a code similar to what I’m using: ```auto import json import mercantile import requests from requests.exceptions import HTTPError TOKEN = "MLY|7...d" QUADKEY = "023110" LIMIT = 2000 def main(): params = { "fields": "id,geometry,aligned_direction,object_value,object_type", "start_first_seen_at": "2021-10-01T00:00:00+0000", "end_first_seen_at": "2022-01-01T00:00:00+0000", "start_last_seen_at": "2021-10-01T00:00:00+0000", "end_last_seen_at": "2022-01-01T00:00:00+0000", "object_values": "regulatory--no-left-turn--g*", "limit": LIMIT, "bbox": quadkey_to_bbox(QUADKEY), } headers = { "Content-Type": "application/json", "Authorization": f"OAuth {TOKEN}", } print(json.dumps(params, indent=2)) response_content = search_map_features(params, headers) print(json.dumps(response_content, indent=2)) print(len(response_content["data"])) def search_map_features(params, headers): with requests.Session() as session: response = session.get("https://graph.mapillary.com/map_features", params=params, headers=headers) if response.status_code != requests.codes.ok: raise_http_error(response) return response.json() def raise_http_error(response): if isinstance(response.reason, bytes): try: reason = response.reason.decode("utf-8") except UnicodeDecodeError: reason = response.reason.decode("iso-8859-1") else: reason = response.reason http_error_message = f"{response.status_code} HTTP Status: {reason} for url: {response.url}" raise HTTPError(http_error_message, response=response) def quadkey_to_bbox(quadkey): tile = mercantile.quadkey_to_tile(quadkey) bbox = mercantile.bounds(tile) return f"{bbox.west},{bbox.south},{bbox.east},{bbox.north}" if __name__ == " __main__": main() ``` Sometimes this code returns the following result: ```auto { "fields": "id,geometry,aligned_direction,object_value,object_type", "start_first_seen_at": "2021-10-01T00:00:00+0000", "end_first_seen_at": "2022-01-01T00:00:00+0000", "start_last_seen_at": "2021-10-01T00:00:00+0000", "end_last_seen_at": "2022-01-01T00:00:00+0000", "object_values": "regulatory--no-left-turn--g*", "limit": 2000, "bbox": "-101.25,36.59788913307021,-95.625,40.97989806962013" } { "data": [ { "id": "1059714538214858", "geometry": { "type": "Point", "coordinates": [ -96.548783633697, 39.189423358123 ] }, "aligned_direction": 273.93481148483, "object_value": "regulatory--no-left-turn--g1", "object_type": "trafficsign" }, { "id": "1059714571548188", "geometry": { "type": "Point", "coordinates": [ -96.548449367512, 39.189418245144 ] }, "aligned_direction": 274.80228197329, "object_value": "regulatory--no-left-turn--g1", "object_type": "trafficsign" }, { "id": "623827028704848", "geometry": { "type": "Point", "coordinates": [ -99.096355950596, 40.699431403659 ] }, "aligned_direction": 87.11265738214, "object_value": "regulatory--no-left-turn--g1", "object_type": "trafficsign" } ] } 3 ``` But in most cases, it fails with a 500 HTTP Status code. ```auto Traceback (most recent call last): ... raise HTTPError(http_error_message, response=response) requests.exceptions.HTTPError: 500 HTTP Status: Internal Server Error for url: https://graph.mapillary.com/map_features?fields=id%2Cgeometry%2Caligned_direction%2Cobject_value%2Cobject_type&start_first_seen_at=2021-10-01T00%3A00%3A00%2B0000&end_first_seen_at=2022-01-01T00%3A00%3A00%2B0000&start_last_seen_at=2021-10-01T00%3A00%3A00%2B0000&end_last_seen_at=2022-01-01T00%3A00%3A00%2B0000&object_values=regulatory--no-left-turn--g%2A&limit=2000&bbox=-101.25%2C36.59788913307021%2C-95.625%2C40.97989806962013 ``` I agree with @eserte that exceptions have become more frequent after 2022-01-27. ---
**Author:** ![chrisbeddow](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.mapillary.com/chrisbeddow/32/844_2.png) [@chrisbeddow](https://forum.mapillary.com/u/chrisbeddow)\ **Post date:** [February 2, 2022, 3:04pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/14 "2022-02-02T15:04:13Z")
It will have a max number of 2000 items per response I believe. Maybe the response is too large? I wonder if the response size pre-filter has an effect… but anyway, what zoom for the quadkeys are you using? Best to try smaller to be safe, with more calls which is okay. ---
**Author:** ![aromanov](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.mapillary.com/aromanov/32/71526_2.png) [@aromanov](https://forum.mapillary.com/u/aromanov)\ **Post date:** [February 2, 2022, 3:24pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/15 "2022-02-02T15:24:07Z")
The same thing happens even for quadkeys of the 14th zoom level. But less frequently. ---
**Author:** ![eserte](https://avatars.discourse-cdn.com/v4/letter/e/67e7ee/32.png) [@eserte](https://forum.mapillary.com/u/eserte)\ **Post date:** [February 2, 2022, 6:02pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/16 "2022-02-02T18:02:19Z")
> [@chrisbeddow](#): > > It will have a max number of 2000 items per response I believe. Maybe the response is too large? The error may happen even if the result set is zero. ---
**Author:** ![bjor](https://avatars.discourse-cdn.com/v4/letter/b/e19b73/32.png) [@bjor](https://forum.mapillary.com/u/bjor)\ **Post date:** [February 2, 2022, 9:12pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/17 "2022-02-02T21:12:19Z")
I’ve been using the auth in the header. I do a bbox approach where I split the bbox up if the returned size is == limit. BUT, I have changed nothing in my code, and it has been working for the past few hours today. ---
**Author:** ![eserte](https://avatars.discourse-cdn.com/v4/letter/e/67e7ee/32.png) [@eserte](https://forum.mapillary.com/u/eserte)\ **Post date:** [February 4, 2022, 8:27pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/18 "2022-02-04T20:27:48Z")
Thanks for releasing the handbrake — API calls work fine for me again. ---
**Author:** ![chrisbeddow](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.mapillary.com/chrisbeddow/32/844_2.png) [@chrisbeddow](https://forum.mapillary.com/u/chrisbeddow)\ **Post date:** [February 7, 2022, 10:32am UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/19 "2022-02-07T10:32:31Z")
@bjor @eserte looks indeed like a bug, and should be fixed now. Please drop a note here if it’s still not working as expected! ---
**Author:** ![bjor](https://avatars.discourse-cdn.com/v4/letter/b/e19b73/32.png) [@bjor](https://forum.mapillary.com/u/bjor)\ **Post date:** [February 8, 2022, 8:26pm UTC](https://forum.mapillary.com/t/mapillary-v4-api-map-feature-search-oauthexception/5793/20 "2022-02-08T20:26:05Z")
It was working nice for a while, but now it’s back to giving me 500 errors for every request. I have a rate limiter set to 5000/1min (though I’m never reaching those speeds). No body with an error is returned but this is in the response headers: > www-authenticate: OAuth “Facebook Platform” “unknown\_error” “An unexpected error has occurred. Please retry your request later.” Here is an example request url: > [https://graph.mapillary.com/map\_features?fields=id%2Cgeometry%2Cobject\_value&object\_values=object--bench&limit=2000&bbox=[-124.848974%2C24.396308%2C-66.885444%2C49.384358]](https://graph.mapillary.com/map_features?fields=id%2Cgeometry%2Cobject_value&object_values=object--bench&limit=2000&bbox=%5B-124.848974%2C24.396308%2C-66.885444%2C49.384358%5D)