The following steps describe how to create a vendor invoice from an existing purchase order.

1. Enter the T-Code /nMIRO to create a vendor invoice.
2. Enter the current date in the Invoice date field.
3. Select U1 in the tax type dropdown.
4. Enter an existing purchase order number.
   Verify that the Calculate tax checkbox is selected.
5. Press Enter.
6. Select the first line item.
7. Copy the amount in the Balance field and paste it into the Amount field in the header.
8. Click Simulate.
   Verify the debit or credit and that the tax is posted to the accrued GL account.
9. Click Post.
   An accounting document is created. Document the invoice number for your records.