Macros are constants or pieces of code that are being taken care of by the compiler before the rest of the code in order to replace the code where the macro is used with the content of the macro. There are three different types of macros: standalone macros, local macros, and macro libraries.
Macros are typically constant values that are only changed by developers. They are used so that developers don't have to hardcode these kind of values in the X++ code.
The macro libraries can be found in AOT under Macros. Each of them can contain multiple macros that can be used throughout the rest of AX.
To use the macros from a macro library in AX, simply include them in the scope that you would like to use them. The following example shows how to use ...