Errors
We use the HTTP response codes to indicate the success or failure of an API request:
  • codes in the 2xx range indicate success;
  • codes in the 4xx range indicate an error having to do with the provided information (e.g. a required parameter was missing, insufficient funds, etc.);
  • codes in the 5xx range indicate an error having to do with the bunq servers. If you get such an error, please report it to us via chat.

Response Codes

Code
Error
Description
200
OK
Successful HTTP request
399
NOT MODIFIED
Same as 304. It implies you have a local cached copy of the data.
400
BAD REQUEST
A parameter is missing or invalid.
401
UNAUTHORISED
A token or signature provided is not valid.
403
FORBIDDEN
You're not allowed to make this call.
404
NOT FOUND
The object you're looking for cannot be found.
405
METHOD NOT ALLOWED
The method you are using is not allowed for this endpoint.
429
RATE LIMIT
Too many API calls have been made in a too short period of time.
466
REQUEST SIGNATURE REQUIRED
Request signature is required for this operation.
490
USER ERROR
A parameter is missing or invalid.
491
MAINTENANCE ERROR
bunq is in maintenance mode.
500
INTERNAL SERVER ERROR
Something went wrong on our end.
All 4xx errors include a JSON body explaining what went wrong.

Rate Limits

If you are receiving the 429 error, please make sure you are sending requests at rates that are below our rate limits.
Here are our rate limits per IP address per endpoint:
  • GET requests: 3 requests within any 3 consecutive seconds
  • POST requests: 5 requests within any 3 consecutive seconds
  • PUT requests: 2 requests within any 3 consecutive seconds
  • Callbacks: 2 callback URLs per notification category
We have a lower rate limit for /session-server: 1 request within 30 consecutive seconds.
Last modified 1yr ago
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