To provide a quick and easy visual reference the link to the project or project structure is distinguishable by the number of separator characters used. If there is no separator, the link is made to the project. A single separator character such as an exclamation mark after the project code (the first code) indicates the link type is a task (the link is to the project operational structure). Two separators placed after the project code mean that the link corresponds to a budget code (link to the project budget structure).
This field is populated by default with the project code if you accessed this function directly from the project. If you accessed this function from the project structure the project code and project budget/task code is displayed accordingly.