The invoice or credit tab can only be unlocked by your customer or the Procure Wizard support team.
We would advise you to contact your customer in the first instance as, if the order has already been exported to their external accounts package, they may be able to make any changes to the invoice via their accounts provider.
You can request assistance from the support team in unlocking an invoice or credit via your Access Digital Assistant, by selecting Talk to an agent and providing the PO number of the invoice or credit, a member of the team will get back to you in under 20 minutes.
The support team will first check if the invoice has been exported to the customers external accounts package, if it has not been exported, they will unlock the invoice/credit tab allowing you to make any changes you need to the invoice.
If the invoice/credit has been exported, you will be advised to contact your customer directly to discuss any changes required.