# Legacy PSI Endpoints
source: https://developer.mastercard.com/open-finance-us/documentation/products/pay/psi-tools/legacy/index.md

The legacy endpoints are for an older version of PSI.

These endpoints do not provide an unauthorized return score, and NSF reason codes are not optional.

API Reference: `GET /aggregation/v2/customers/{customerId}/accounts/{accountId}/payments/paymentIndicator`


API Reference: `GET /aggregation/v1/customers/{customerId}/accounts/{accountId}/payments/paymentIndicator/fcra`

Warning: Do not use the legacy endpoints for a new integration. They are scheduled to be deprecated.

We recommend using the new PSI endpoints which support an unauthorized return score:

* [New FCRA Version](https://developer.mastercard.com/open-finance-us/documentation/products/pay/psi-tools/psi-fcra/index.md)
* [New non-FCRA Version](https://developer.mastercard.com/open-finance-us/documentation/products/pay/psi-tools/psi/index.md)