# Older Versions
source: https://developer.mastercard.com/payment-account-management/documentation/api-reference/older-versions/index.md

This page contains links to older versions of the spec for the Payment Account Management (PAM) Application Programming Interface (API).

## Change Log {#change-log}

| Version |                             Description                             |
|---------|---------------------------------------------------------------------|
| 1.4.2   | Cosmetic changes to improve the readability of the YAML file.       |
| 1.4.1   | Request Status API Added allowing results of updates to be obtained |
| 1.4     | Initial release                                                     |