If you get an error message indicating that the maximum number of custom fields permitted by the license has been reached, you might want to verify the number of custom fields currently provided by your license, and the total number of custom fields that you require in your system.
This error typically occurs when custom fields are added after the access control
plugin for your specific plugin was installed. The license provided with the plugin
includes the number of custom fields required to synchronize cardholder entities.
However, if you need to add custom fields afterwards, you also need to update the
Security Center license with the proper
number of custom fields allowed by the system.