You can use the Records Explorer to find the messages that your application defines. By understanding which messages exist and when they are called, you can quickly decide whether you need to create a new message.
In the navigation panel of Dev Studio, click Records.
Expand the Technical section and then click Message to open a list of message rules in your application.
Click the Category column to sort the messages.
Click a message to open the Message form.
On the History tab, review the information in the Description and Usage fields to understand the purpose of the message.
Click Actions > View references to display a list of rules that call this message.
Click a rule to open it, and then review the conditions that cause the rule to call the message.