Messages at Client Level
Goal: Functional
Developer: Nicolas Micoud
Feature Ticket: IDEMPIERE-5136
Sponsor: TGI
Description:
Messages are defined and translated at System level. Sometimes, it can be useful to set a translation at tenant level.
It is possible now using the new "Client level messages" window.
Logged in a tenant, open "Client level messages" window, and add a record : select the message and the language. Content of "Message Text" and "Message Tip" will be read from the message. Simply adapt it so it fits your need and save :

Set the System Configurator MESSAGES_AT_TENANT_LEVEL to Y.
Execute Cache Reset process to force the reload of messages.
And you can see the result, "Home" has been translated for "Home of Garden World"

Source: Wiki