In other words, this bill of lading cannot be transferred to others as a document of title.

Copies of non-negotiable bills of lading are easily confused with non-negotiable bills of lading and registered bills of lading. A copy of a non-negotiable bill of lading is an unsigned copy of the bill of lading. Its main purpose is to make people know the information of the bill of lading for information purposes. A non-negotiable bill of lading (as asked by the landlord) is a copy of the bill of lading marked "non-negotiable".

I hope my answer can help you:)