changeing the customer name length to 100

I need to change the customer name length to 100 (as well as vendors) what is the impact of doing this? I know that i need to change many other objects. Is it better to add a field for this issue ?

Did you try searching the forum a little? For example, this thread is from last week and has good info:

Hi If you choose to change the lengthe of the field then you should use then Navision Developers Toolkit - and then the “Where Used” function will show you where the field is used.

Thank you After checking all notes in i found that creating a new field in master table is much safer and better of future upgrade. Using the Developper toolkit is very helpfull