Learn what to do if your response is delayed or has an error.

If your TINCheck response is delayed, do not resend the TINCheck request. These delays can be caused by several reasons, such as delayed IRS service responses or the IRS service being temporarily unavailable. In any case, your request is still being processed. If you resend it, it will result in duplicate TINCheck requests in the API.

You only need to resend the request if you get an error message or an IRS status 1 response, which means your request will not be completed.

Duplicate requests from the same client will attempt to process until a successful IRS search result is received. If the IRS services are unavailable and clients continue to resend the same TIN/Name combination, TINCheck services will continue retrying the same requests to the IRS servers.