There is no charge for the Preliminary Change of Ownership Report (PCOR) if it is complete and accompanies the transfer document. An affidavit is a sworn statement of fact that can be used in a variety of legal proceedings, from bankruptcy cases to family and civil litigation matters.Marriage License applications are available through the Oakland County Clerk's Office. Complete and submit your application online. This affidavit serves as a legal document to certify the marriage of individuals in California. An affidavit is a written statement of facts that is sworn or affirmed under oath to be true. It is commonly used in legal proceedings as evidence or testimony. An affidavit is a written statement, sworn to be true, that can be used as evidence in legal proceedings.