How to set up validation in the job title?

Question

JavaScript

Hello! I have many sites with profiles, where the user enters his full name, date of birth and many many other things, incl. data about your work. I use jquery validation and 3rd party dadata service .
Example
I also use regexp: ^[А-Яа-яЁё\d\s\-\,\№\#\.\+\(\)"]+$
Sometimes users enter not only the name of the work, but also the street:
"LLC "TD POLITORG" Fadeeva 2d" or "Southport SAUNA DE LUX", etc.
Question: what can you think of (need an idea) to prevent the user from entering everything else, except for the name of the organization?
Add help-block: "organization name only"??
Change placeholder: "example: OOO "PTN"" ?
What else can you think of? Who has experienced this?

Answer 1

Use dynamic label and placeholder for refinement. Example