Use
If you store your documents correctly, you can ensure a clear link between the original document and the processing document.
Always store your original documents under the processing document number (see the following illustration).
Depending on whether you want to store customer or vendor documents, you can choose from different types of document storage.
For customer documents, you either use the document number created by a pre-invoicing system, or have the system assign numbers using the internal number assignment function.
For
vendor documents, have the system assign the processing document number. Record the processing document number in the original document (see the following illustration). Enter the number of the original document in the reference number field in the header of the processing document. The original document number can then be used in correspondence and system queries. You can use the reference number to search for the corresponding document in line item display.