A Certificate of Abandonment of Fictitious Business Name is a legal document that is filed with the county recorder in the county where the business is located. It states that the business has abandoned the use of a fictitious business name and that the business is now using its true name. It also states that the business will no longer use the fictitious business name. The Certificate of Abandonment must be signed by the owner of the business and notarized. There are two types of Certificate of Abandonment of Fictitious Business Name: an original certificate and an amended certificate. An original certificate is used when a business is abandoning the use of a fictitious business name for the first time. An amended certificate is used when the business has already filed an original certificate and is now abandoning the use of a different fictitious business name.