Warning Message
You can use a warning message to warn the user about limitations on a particular product. For example, if you wanted to warn a user that a product should be 18” or greater in width.

In the Warning Message column on the prompts page, enter a formula to result in a statement when a particular condition is met. It can be anywhere in the column as it does not need to be related to only 1 prompt.

In this example, I entered =IF(Width<18,"Width should be greater than 18",0) in the warning message column. Since I entered 17 as the width, a warning box comes up when I hit OK to ensure that I want to proceed with a particular value. If the user hits Retry, they’ll return to the prompts screen to make the changes. If they hit Cancel, they ignore the message and proceed with violating the warning.