LC0028

Event subscriber arguments now use identifier syntax instead of string literals.

Business Central 2023 wave 1 (BC22) new features: Event navigability | Dynamics 365 Lab (yzhums.com)

Go To Definition and where used

The main benefit of this is the use of standard Visual Studio Code navigation support such as Go To Definition or see references inline.

Code Actions

Know there are code actions available to convert existing event parameters in event subscribers from string literal to the new identifier format.

Documentation

More details on this on Microsoft Learn: Code navigability on event subscribers