A non-deliverable currency is a currency that can be used in a wallet and to receive payments but can't be used to withdraw money into external accounts.
BVNK provides a multitude of currencies but only deliverable currencies (EUR, GBP and USD) can be used to withdraw money into an external bank account.
How do I create a wallet with a non-deliverable currency?
If you’re not seeing the desired currency to be used in a new wallet, get in touch with your account manager to have it added.