SAP ME23N

It displays a purchase order read-only, for reviewing details, status, history and related documents without risk of changing anything.

• PO number.
• Item and header data (read-only).
• Status tab (GR/IR, release, delivery).
• Document flow / related documents (GR, invoices).

• Use it to investigate a PO safely (no accidental changes).
• Check the status and history to answer "what happened".
• From here, drill into goods receipts and invoices.

• (Display only, so no posting errors.)
• "PO does not exist", wrong number/plant.
• Missing authorization to display the PO.

• Reading header status and stopping. Completion is tracked per item, so a purchase order can look open because one line of forty is outstanding.
• Treating display access as harmless. The PO shows prices, terms and vendor conditions, which is commercially sensitive whether or not anybody can change it.
• Using it to answer whether a supplier was paid. The history shows invoice receipt. Payment is a separate document and a separate question.
• Missing the account assignment tab. It is where you find out whether a purchase became stock or somebody's cost centre.
• Not following the document flow. The receipts and invoices are one click away and answer most of what people open the PO to ask.