Users want to create a workflow and apply a barcode to a document. Main use case is that this document is later sent externally. The barcode should contain index data information or reference information that allows the document be assigned correctly when being returned / scanned in again.
Use Case example:
Delivery document is created - barcode with the order number is applied - document is sent/printed - document is signed by the customer - signed document will be scanned again and should be added to the system by using the order number from the barcode applied earlier.