A license or registration is claimed
Ask which authority issued it, what name it is under and whether it applies to the proposed work. Then use the actual authority’s verification route. Requirements are not stated uniformly across the country, so do not assume that a credential label means the same thing everywhere. A useful check ties the record to the business or person and the work being proposed, rather than only confirming that a number exists.
Notice next: Keep the identity and verification record with the estimate. Ask the relevant authority to resolve a mismatch or uncertainty before hiring.