This help article will guide admin users as to what each advanced setting within the Admin section does.
To access the Advanced Setting area click on Admin and click Advanced Settings under the Account Setup menu.
Create multiline invoices - Uploaded invoices will be created with multiple lines where multiple line items are present. This setting should be disabled if you require invoices to have only one line.
Auto accept approved purchase requests - If enabled, approved purchase requests will not require acceptance from Finance before being eligible for matching to an invoice.
Allow unknown suppliers on purchase requests - If enabled, users will be able to create purchase requests against a supplier name that is not set up in their suppliers list within Finance.