A CSCE is good for an element credit for up to 365 days from the date it was issued. A CSCE is used if their call sign has not appeared in the FCC database yet and wants to upgrade.
An applicant must supply a copy, and show the original of their CSCE if their license has not yet been issued to upgrade. Upload the copy with the submission.
For CSCEs issued by ExamTools, there is an easy way to verify the authenticity of the CSCE should there be any question. At the very bottom is a URL. “To check the authenticity of this CSCE visit https://exam.tools/validate/”