Create a formal request letter to send to [Vendor] to collect necessary compliance documents. The letter should clearly outline what documents are required, including certifications, audit reports, and any other relevant records. Specify the deadline for submission, preferably in alignment with the audit schedule, and explain the consequences of non-compliance. Include [Audit Timeline] and any compliance standards related to [Product] or [Service]. Ensure the tone is professional and the request is clear with no ambiguity about the deadline.