Vendor Invoice can be created using these methods -
1. One Invoice for One SO: Click on sales Order Menu and then open the Sales Order for which Invoice has to be created. Click on Document Actions and click on Invoice. After that follow the instructions given in Sales Invoice.
2. One Invoice for Multiple SO for all items: Click on Sales Order Search Screen. Select the SO documents for which Invoice is to be created. Click on Sales Invoice button to create Invoice for the all items in the selected PR. After that follow the instructions given in Sales Invoice.
3. One Invoice for Multiple SO for all items: Click on Sales Invoice Menu and then click on Create New button, and then follow the below steps to import Items from PR:
After that follow the instructions given in Sales Invoice.