What are the names given to the identifier?
Given some examples.
hoover with your mouse over the warning or identifier field: the identifier is used with a #define in the generated code, so you can use it in your application code.
See for example how it is used in https://mcuoneclipse.com/2019/02/03/tutorial-blinky-with-the-nxp-lpc845-brk-board/