PlayStation Network Wallet is one of the ways to purchase electronic Playstation games, add-ons (ADD-ONS), etc. directly from the PSN network.
Do you fail to purchase electronic games, gaming add-ons, etc. directly from Playstation Network, because the Playstation network does not accept Lithuanian credit cards? Then Playstation electronic money is a great solution. Once you have purchased a Playstation wallet supplement for the amount you choose, you will have the option to pay in Playstation Store without credit card support.
NOTE: You will only be able to access the PlayStation wallet if your Playstation account is registered in the UK region. If you already have a Playstation account registered in another region, this is not a problem, just create an additional / new Playstation account and select a country / region in the UK.