The PCS admin can modify the language of the warning message, on the Juniper SA, by navigating to:
Maintenance > System > Options == End-user Localization
Note:
- If you have the 'End-user Localization' option selected as 'Automatic', then the users will see the message (yellow prompt ) based on the language settings configured on the web browser.
- The End-user Localization option will not change / modify the actual Sign-in page.
For Example:
- On the PCS device, the End-user Localization option has been changed from Automatic to French.
- Now when users, via the browser, go to the Sign-in page the same yellow prompt is displayed in French.
Before:
Change made on the PCS device:
After the change: 
For more information, refer to
KB20082 - Message reported on IVE login page after upgrading to 7.1