If your husband is sponsoring your son's Dubai Golden Visa but there are discrepancies in names, an affidavit is needed. This document, signed by your son's biological father, grants consent for your current husband to act as a legal guardian for the visa process. It's crucial to consult a local advocate and notary to prepare and attest this affidavit correctly, as templates alone are insufficient. Legal advice is recommended to navigate the specific requirements for sponsorship when biological parent details differ.