Transaction Error: Target Authorization Error

What does 'Target Authorization Error' mean?

The target authorization error is peculiar to mobile money transactions. It usually happens when there's a limit on the mobile money wallet being used and the customer is attempting to pay an amount above that limit. It could also occur if the wallet is not adequately funded for the transaction the customer is trying to make. 

What can I do about it?

Please confirm that the mobile money wallet the customer is using is adequately funded and does not have any limits preventing them from making that transaction.