The system allows you to maintain data for individual stock segment for a combination of vendor and material.

When you create a purchase order with reference to documents, for example purchasing info record, the system copies the segment values from the reference document.

You can maintain purchase info record (under delivery and over delivery tolerance, minimum and maximum purchase order quantities) for individual segments of a material in the material master. Assume that you did not maintain these values for a material in the material master and try creating a purchase order for the same material. In such case, the system copies the purchase info record details for the individual segment of a material from the purchasing info record document that you already created for the material.