Supplier integration with services business language

The present invention describes a method comprising of a services business language (SBL) providing a common interface for communication with one or more multiple providers in one or more vertical segments. In one embodiment, the vertical segments comprise one or more of package shipping, courier services, flights, hotels, rental cars, and dry cleaners. In another embodiment, the SBL documents of the SBL are defined by Universal Business Language (UBL). In one embodiment, the SBL document includes multiple namespaces that are used in documents as element types and attribute types.