Secured creditors filing a UCC financing statement under Article 9 must include a description of the collateral. (UCC 9-502) UCC Article 9 adopts a “notice filing” system, under which the purpose of the filing is to provide notice of a security interest in the specified collateral. UCC Article 9 does not require a precise (e.g., serial number) description. Even so, there has been much litigation over the sufficiency of the collateral descriptions in UCC financing statements.