This purchase order includes a line item with a supplier-charged tax and a line item where the tax is self-assessed. The line items designated as U1 will get audited, those designated as I1, won't.
- Enter the T-Code /nME21N to create a Purchase Order. 
- Enter the appropriate value in the Vendor field, for example, 3000.
- Enter the appropriate value in the Purch. Org. field, for example, 3000.
- Enter the appropriate value in the Company Code field, for example, 3000.
- Click Enter.
- Enter 001 in the Purch. Group field. 
- Fill out all following fields with the appropriate values. Make sure that you enter K in the A (Acct Ass. Cat.) column, the other values in the fields are just examples. 
- Click  to display the item details. to display the item details.
- Go to Account Assignment and enter a Cost Center. 
- For the first line item, go to the Invoice tab, and set the Tax Code field to U1.
- For the second line item, go to the Invoice tab, and set the Tax Code field to I1. 
- For each line item, click Taxes.
- Click Save.
- Take note of the order number for your records.