Preservation of fixed pegging

摘要

A method for providing a planning framework for use in managing a material flow of products in a supply chain. According to the method, subsequent instances of said material flow are associated with linked documents in a document flow. In a prior document, first relations are established identifying one or more dependent documents, for producing one or more products in a next instance of said material flow. Said prior document is converted into said next document in a forward way. According to the invention, the method comprises establishing in said next document the first relations identifying said one or more dependent documents , so as to convert said next document into said prior document in a reverse way. In this way, fixed relations can be preserved between product requirements and products while changing the material flow.