Selecting the output connector dynamically If StreamServer generates different types of documents and not all Buyers prefer e-invoices, you must use at least two output connectors in the Project: • One output connector that signs, archives, and validates e-invoices. • One output connector that manages other documents. These documents can be archived using standard procedures. Figure 4 Using two output connectors The output connector that is used is determined by customer preference (how the Buyers wants to receive their business documents). You can retrieve the preferences in one of the following ways: • Retrieving customer preferences directly from input data. • Retrieving customer preferences from a text file or table. • Retrieving customer preferences from a user database.