Message determination represents the classic interface to business partners. It is used across applications, in Materials Management (Purchasing, Inventory Management, Invoice Verification), Sales and Distribution (Shipping, Delivery, Picking), Production Planning and Control, Plant Maintenance, Project System (Order Confirmation) and Financial Accounting (Document Printing).

In addition to print output with subsequent dispatch, which we describe here, you can also transfer requirements to vendors via fax, EDI or SAPOffice.

In this IDES process, you demonstrate message output by creating and changing a purchase order, as well as dunning and reminding the vendor using a delivery reference.