cvv: 3 digit CVV located on the cardsession_id: Use this identifier to verify the OTP and finalise activation via the ActivatePhysicalCardOTP RPC equivalent.404 CARD_NOT_FOUND/CARD_ISSUANCE_NOT_FOUND: Card or its issuance cannot be located412 CARD_EXPIRED/ACTIVATION_NOT_ALLOWED: Card is expired or not eligible for activation400 ACTIVATION_FAILED: CVV validation failed or request data invalid503 SERVICE_UNAVAILABLE: Backend temporarily unavailable