Avalara Developer Network Developer



You have exceeded the number of concurrent requests for this API call.


  "code": "ConcurrentApiCallIsNotAllowed",
  "target": "Unknown",
  "details": [
      "code": "ConcurrentApiCallIsNotAllowed",
      "number": 1802,
      "message": "There is already a SendSales API call in process for -0---1- on -2-. ",
      "description": "Only one API can be called at the same time. Please wait for the first to finish before calling the API again.",
      "faultCode": "Client",
      "helpLink": "http://developer.avalara.com/avatax/errors/ConcurrentApiCallIsNotAllowed",
      "severity": "Error"


The API call you made permits only a limited number of concurrent requests. Your request exceeded this concurrency threshold.

Please restrict your usage of this API to only the specified number of concurrent requests.