noun
business permit; business license
An official document that authorizes a business to operate. Often required for regulated industries.
飲食店を開くには営業許可書が必要です。
You need a business permit to open a restaurant.
営業許可 refers to the permission itself, while 営業許可書 is the physical document or certificate.
Compound of 営業 (business) + 許可 (permission) + 書 (document).