Bandwidth Throttling

Web of Knowledge Web Services use throttling to manage the number of requests processed per second and the amount of data sent per request. Throttling ensures consistent and reliable performance for all users of the services.

All throttling messages begin with the text Request denied by Throttle server. Each message indicates the reason for the denial.

Reason

Explanation

Your Action

Throttle Server is not available.

The service is temporarily unavailable.

Wait a few minutes and then resubmit your request.

Internal Error

Web services could not process your request.

Contact Thomson Reuters Technical Support. There may not be a problem with your request. However there is a problem with our Web service. Please have the details within this message available for Thomson Reuters Technical Support.

limit of <number> requests per period has been exceeded for throttle AUTH-ReqPerPeriod

The number of requests for a new session is limited to 5 per five-minute period.

Resubmit the request. It may be necessary to adjust your Web client to limit the number of requests submitted per second.

limit of <number> requests per period has been exceeded for throttle REQ-ReqPerSec

The number of data requests (user queries) is limited to 2 per second.

Resubmit the request. It may be necessary to adjust your Web client to limit the number of requests submitted per second.

amount requested exceeds limit of 100 per request for throttle REC-AmtPerReq

Each search operation limits the number of records retrieved to 100 per request.

Submit a request for additional data. The operation retrieve enables you to overcome the 100 records per query limit.

amount requested exceeds limit of 100 per request for throttle REF-AmtPerReq

The citedReferences operation limits the number of references retrieved to 100 per request.

Submit a request for additional data. The operation citedReferencesRetrieve enables you to overcome the 100 references per query limit.

amount requested exceeds limit of <number> per period

The number of records retrieved per period is specified by your license agreement.

You cannot request more data. However, if you believe that you are entitled to more data, contact Thomson Reuters Technical Support.