Loging special conditions in a code like QM Errors

[ssimop]

When an error occurs, special variable _error is filled with information about the error.

I am wondering whether there exists a way to log in a similar way special conditions of interest within a code, ie to simulate non QM errors. Most particularly I am in need of the place (offset of the statement in macro text) and/or the line (the statement).

Thanks in advance