Hi Team,
We have tried this on Dileep’s local OBIEE instance. It includes 3 steps:
    1. Edit the productmessages.xml file present on path
       “..Oracle_BI1\bifoundation\web\msgdb\l_en\messages”
    2. Restart the OBIEE services
    3. Once restart is done, open the OBIEE analytics and check for the updated message.