# Single Card Enrollment
source: https://developer.mastercard.com/consent-management/documentation/use-cases/transaction-notifications/single-card-enrolment/index.md

## Overview {#overview}

Single-card enrollment enrolls individual consumer cards in the Transaction Notifications service. Use this method when issuers or corporates do not enroll cardholders directly in the service. In these cases, cardholders must provide explicit consent through the Consent Management \& Enrollment APIs or the Consent Management \& Enrollment UI before you can deliver transaction notifications for their purchases.
For example, if you are an expense management provider working with corporates whose employees use personal cards for business expenses, you must enroll those cardholders using single-card enrollment.

Within single-card enrollment, the [Consent Management \& Enrollment APIs](https://developer.mastercard.com/consent-management/documentation/api-reference/index.md) are available if you are PCI compliant and can handle PAN data on behalf of the cardholder. In this scenario, you can use your own UI to enroll cardholders into your service. For more information, see [Consent using Consent Management \& Enrollment APIs](https://developer.mastercard.com/consent-management/documentation/use-cases/transaction-notifications/single-card-enrolment/apis/index.md).

If you are not PCI compliant, you must use the Consent Management \& Enrollment UI. In this case, Mastercard handles PAN data on your behalf and returns the card reference of the enrolled consumer card. For more information, see [Consent using Mastercard Consent Management \& Enrollment UI](https://developer.mastercard.com/consent-management/documentation/use-cases/transaction-notifications/single-card-enrolment/card-auth-consent-ui/index.md).

For some use cases, you might need to use both single-card enrollment and bulk-card enrollment to enroll different types of cardholders. For more information about issuer-led or corporate-led use cases, see [Bulk Enrollment APIs](https://developer.mastercard.com/consent-management/documentation/use-cases/transaction-notifications/bulk-card-enrolment/index.md).