Undefined Fuel-reserved For Proprietary Jun 2026

Some fleet management profiles use "Reserved for Proprietary" to block or flag transactions of unknown products to prevent fuel card fraud or misuse. Common Uses

The phrase is a technical status or error code typically found in petroleum transaction systems, ERP software like SAP, or fleet management databases. It indicates that a transaction has been tagged with a fuel type code that the current system does not recognize, as it has been set aside (reserved) by a specific vendor for their own "proprietary" use. undefined fuel-reserved for proprietary

According to technical manuals from fueling leaders like Gilbarco Veeder-Root , these codes sit between standard fuel types and general automotive merchandise: Code Range Standard Fuels (Gasoline, Diesel, E85) 071–098 Undefined Fuel-Reserved for Proprietary Use 099 Miscellaneous Fuel 100+ General Automotive Merchandise/Services How to Fix It According to technical manuals from fueling leaders like

Some proprietary reserves are not “fuels” in the combustion sense but latent heat carriers—fluids that absorb waste heat and release energy through phase change, contributing to propulsion. Legally classified as coolants, they are functionally fuels. they are functionally fuels.