A supplier invoice contains a variety of information that must be entered in the system. For invoices with purchase order reference, some of the data, such as the invoicing party, the currency, or the items to be invoiced, can be proposed by the system via the reference to the purchase order.

There are two functions in the system for entering supplier invoices manually:
SAP Fiori App Create Supplier Invoice
Transaction Enter Incoming Invoice (MIRO) respectively the app Create Supplier Invoice - Advanced
Depending on the reference document category used, the system selects items for goods/services and/or planned delivery costs:
| Reference Document Category | Type of Invoice Items to Be Selected |
|---|---|
| Purchase Order/Scheduling Agreement | Goods/Services and Planned Delivery Costs |
| Service Entry Sheet - Lean Services | Goods/Services |
| Delivery Note | Goods/Services |
| Bill of Lading | Planned Delivery Costs |

If you use the reference document category Purchase Order/Scheduling Agreement, you can choose which items are to be selected in the Assignment Options under Settings: Deliveries, Returns, Delivery Costs
After assigning the purchasing document reference, the system automatically copies the following data from the purchase order:
Invoicing Party
Terms of payment (if set in PO)
Currency
Invoice items:
The system proposes all purchase order items that fulfill the relevant allocation criteria. Quantity and amount are derived from the purchase order history for each item. This means that all items for which goods receipts have already been posted, but which have not yet been completely settled, are selected with quantities and amounts. Items for which no invoice is expected are also listed. However, these items are listed without quantity, amount, and selection. Only the selected invoice items are copied into the document when the invoice is posted.
Compare the proposed data with the data in the supplier invoice. If necessary, correct the data. For example, the proposed values for amount, quantity, and tax code for the items. Deselect the items that are not listed in the supplier invoice.
If you select the Simulate or Post function, the system compares the quantity and amount data of each supplier invoice item with the data of the related purchase order item. The simulate function allows you to display the account movements before posting the document.
In addition, the Create Supplier Invoice app offers the following features:
Display contact details: With this feature, you can display the contact card for the invoicing party of a supplier invoice and navigate to the Supplier object page app for detailed information. The contact card for the invoicing party provides a quick overview of all relevant contact data, such as company data and contact details.
Display purchase order history
Check and enter tax data
Edit terms of payment
Enter planned and unplanned delivery costs
Change the exchange rate and document type for the FI document (to open this detail data, use the Show More button)
Hold or park invoices
Reduce invoices
Change the tax codes of multiple invoice items at the same time
Enter items directly to G/L accounts
Adjust the item list (for example, displayed columns, sorting)


