The certificate of acknowledgment (PDF) must be in the form set forth in California Civil Code section 1189. Find forms, samples and fees for most business entity filings here.Writing a business letter to confirm the receipt of an overdue assignment involves a balance of professionalism and courtesy. Create a job confirmation letter and send it out for signature. Works great on any device. Confirmation Letter Format. Confirmation letter format is the same as regular business format. Here are the 5 steps to get 147c. Order confirmation templates are a simple and predominantly free tool, and are typically just ordinary Word or Excel documents. Confirmation Letter Format.