The purpose of this document is to present a model of the tax related information contained within the messages exchanged between the participants involved in a business transaction, the primary purpose of which is not tax-related, but which may be subject to the imposition of an indirect tax. This model is intended to serve as a reference for any effort to analyze the related messages (documents) of an implementation to verify that the indirect tax implications are adequately addressed, and as input to any effort to define message-oriented specifications involving indirect taxation. |