The article-product concept enables the application of supply chain concepts. Thereby customer specific rules for procurement or delivery are defined. Example: In the case of a changeover of articles or inclusion of new suppliers, a rule is defined that the old stocks are consumed first and only then the new stocks. This way, sales and batch separation are ensured. Another possibility is to the application of a multi-supplier-strategy with the usage of e.g. two suppliers depending on the variants, such as different sizes. Depending on the selected size, the appropriate supplier is set based on the set of rules in ZUGSEIL.BEST. The product as an external view to the customer always remains the same and in the background the different concepts are defined and implemented with the articles and the sets of rules.