How kann I ’save‘ my customers card details for future use, e.g. for recurring payments?

Each individual card, bank or user account that is used for payment within Payengine is transformed into a ‚Payment Instrument‘ whose unique ID represents an encrypted token. Recurring payments can be initiated by using these paymentInstrumentId’s when communicating with Payengine API or within Merchant Center, provided the according payment method or scheme is supporting recurring payments at all. Please note that a credit card must first be successfully authenticated through strong authentication process such as 3D Secure before it supports ‚recurring‘.