The attempt to import a Campaign Verify token to your brand failed because there is already a token that is queued for importing.
Another Campaign Verify token has a status of IN_PROGRESS meaning it is already queued for import. Only one token can be imported at a time.
Verify that there are not existing vetting attempts for Campaign Verify that are in progress by checking the vettingStatus field of the Fetch Vettings API . There should not be a vetting listed with the vettingProvider: "CampaignVerify" that has a vettingStatus of IN_PROGRESS. Please wait until the vetting status moves to SUCCESS or FAILED before attempting to import a new Campaign Verify token.