CertDash is available and works on most tax forms in most states. However, there are some tax exemption documents where CertDash may not be possible. For example, in certain states, exemption documents maybe issued directly by the governing jurisdiction itself, the document may require require double signatures, or have other requirements, which make it impractical to apply the full CertDash process. In those cases, the system will dynamically default to a guided file upload process to ensure required documents can still be collected.