You need to make sure your Merchant Facility (known as the Acquirer) has given permission and setup your account for ignoring recurring payment expiry dates AND they have applied those settings to your account.
Should you not do this step, then you are likely to be in breach of your terms and conditions with the acquirer and the transactions are likely to fail.
Note, the ignoring of expiry dates is ONLY available for recurring billing. The initial sign up or card updates will always require and expiry date.
Once you have confirmed permission with the acquirer, then you can enable "Use Client Type - Recurring" on the Merchant Facility
