Official Document Number The unique number of a preprinted, prenumbered form . This is distinct from the document number , which is the number of a system document.
You are required to record the official document number of all
incoming
and
outgoing
correspondence. This means that when you post a document sent to you by a vendor, you enter the official document number in the
Reference
field. Depending on your Customizing settings, the system automatically checks the format of the number.
Similarly, when you print a system document on a prenumbered form, the system automatically records the official document number in the system document’s
Reference
field. If you then have to reprint a system document on a different form (for example, if you rip the first form), the system changes the official document number assigned to the system document and voids the first prenumbered form.