**Open the PO and read the version history.** Expected: version 3 (or later) shows what changed, for example amounts, dates, or lines. If the change does not affect the invoiced lines, re-matching is safe.

**Open the invoice reconciliation document and find the match reference.** Expected: the header or line match points at the expired version number shown in the error.

**Confirm the current version covers the invoice.** Compare line items, quantities, and amounts on the invoice against the current PO version. Success check before proceeding: every invoice line exists on the current version at the billed amount or within tolerance.

**Re-match to the current version.** In the reconciliation, use the action to reconcile or match against the current PO version, then submit. Expected: the expired-version exception clears and the invoice moves to reconciled or paying status.

**If re-match is not offered, copy the invoice.** Cancel the stuck reconciliation, copy the invoice so it is created fresh against the current PO version, and submit the copy. Expected: the new invoice references the current version and passes matching.