You may be using an audit number from an older license. You'll need to use the information on your most recently issued license in order to successfully add it to LA Wallet. If you need assistance obtaining your audit number, you can contact the Office of Motor Vehicles (OMV) for help at (225)925-6146 or by finding a local office here: https://offices.omv.la.gov/.
NOTE: A license/ID with a valid expiration date does not mean it's your most recent credential from the OMV. A new expiration date is only issued when you renew your license/ID, and any duplicates will share the same expiration date.