Creating invoice routing categories Invoice approval categories are used by the invoice routing approval rules that use routing by role. Select Invoice Routing Categories. For Application Administrator, select Financials > Payables > Payables Setup > Invoice Approval Setup > Invoice Routing Categories. For Payables Manager, select Setup > Invoice Approval Setup > Invoice Routing Categories. Click Create. Specify this information: Vendor Group Specify a vendor group. Invoice Routing Category Specify a name for the invoice routing category. Description Provide a description. Active Select the check box to make the invoice approval category active. Click Save.