Each business partner must sign the Assumed Name Certificate before the notary in order for the certificate to be filed with the County Clerk's office. Please fill out the form below to get in touch, and we'll respond promptly.All you need to do is fill out an Application to Update an Existing Certificate of Occupancy to request a name change on the existing certificate of occupancy. How to get business licenses in San Antonio, TX - Get everything a business owner needs in one DIY package or upgrade for professional help. Fill out this form if you are a Texas taxpayer closing a place of business in Texas. Fill out the form below and we'll be in touch soon. (b). REFERENCES (Schedule 2): At least three (3) references from business organizations to whom the Proposer has provided audit services within the last five (5).