Check all of the solutions or explanations listed below to resolve the problem.
If you have a sub account the solutions will be different, so please check the sub account version of this article.
If your voucher code is not for wallet top up select what your code should be adding to your account to find a solution to the issue:
Your code may have been redeemed correctly. Go to [Transaction History] on the account management website or on your PlayStation system. The top up should show in your transaction history as ‘Wallet Funding’ and the voucher code will be shown on the transaction detail screen. Find out how to check your PlayStation Store transactions.
Alternatively, check your current wallet balance using these methods to find out:
Go to (PlayStation Store) to check current wallet balance.
Sign in to your account and check 'Wallet' on the home screen.
Try the following:
Please note that you may be asked to provide proof of purchase and a copy of the voucher - so do not dispose of either until the issue has been resolved.