Create Purchase Order With Reference to Existing Document

Purchase order with reference

Purchase orders can be created with reference to a purchase requisition, RFQ, quotation, another purchase order, contract, sales order etc. To reference a PO to a previous document you can use the appropriate function.

You can create a PO referencing a previous document in 2 ways

1. Using ME58
2. Using ME21N

Referencing through ME58

In our case if we want to create a PO for a purchase requisition, we can use the transaction code ME58.

I will demonstrate the process starting from ME58 as it calls the ME21N and you can see that actually we create a PO in ME21N anyway.

Step 1)

1. Enter t-code ME58.
2. Choose Vendor and purchasing organization and
3. Select document types.
4. Execute.

How to Create Purchase Order in SAP MM Process

Purchase orders are used for a number of processes in procurement. They can be used for internal procurement (from one plant to another), external procurement of goods (direct consumption or stock) and services. It can also be used for subcontracting, third-party and consignment processes.

Purchase order processing is shown in the following diagram.

Purchase orders can be created with reference to a purchase requisition, RFQ, quotation, another purchase order, contract, sales order.

How to create a Purchase Order

Purchase orders are created by using standard transaction ME21N (or ME21 – the old instance of the transaction).

Step 1)

1. Enter transaction code ME21N.
2. Enter vendor.
3. Enter material number that needs to be procured.
4. Enter the quantity and unit of measure (optional – system uses UoM from purchase info record).
5. Press ENTER to confirm the data entered.