TI-API: Invalid API call as no apiproduct match found

Hi Team,

Backlog API customer SFO is getting the following error when trying to make a quote API call in the pre environment:

{

    "fault": {

        "faultstring": "Invalid API call as no apiproduct match found",

        "detail": {

            "errorcode": "keymanagement.service.InvalidAPICallAsNoApiProductMatchFound"

        }}

}

I verified myself that they are using the correct test key and secret by running a quote API call in test using their key and secret. So this doesn't seem to be a key/secret issue. They are correct.

What could be other reasons for this type of error other than the validity of the key and secret?

Thanks.

Andre