do you believe that a variable with a const qualifier should automatically go in code?
Evidently you are infected with a PC or K&R virus.
It would be a waste of memory (no problem with a PC) to make constants go into code.
1) if it goes into ROM, what is the difference, regardless of implementattion you will need to change the C source to change the message.
2) if it is copied into RAM, you waste a precious resource.
3) if you are trying to overwrite a const, you are violating all principles.

Erik