The 'info' keyword is used in 'on validate', 'on success' and 'on update' actions to display debug messages to enable the owner of the application in debugging. The info message can be viewed only by the owner of the application by clicking on the link "View log details", which appears after the data is persisted in the database. So, if your form is being filled by non-owners, they will not be able to view this message.
In the following example, the info message is displayed after the sendmail function is invoked.
From : zoho.adminuserid
To : "email@example.com"
Subject : "Report for Product Status: " + input.Product_Status_is
Message : "Product: " + productno
info "Report has been sent.";
In the following example, the info message is displayed only if the form data does not get cancelled.
if (count(sign_up[(Username == input.Username && Password == input.Password)]) == 0)
alert "the username/password does not exist";
info input.Username + " " + input.Password;