There are multiple definitions - click on the translation that matches your context.

不可转让的

形容词

full

non-negotiable

adjective

Definitions of non-negotiable

not open to discussion or modification; a take it or leave it offer

Mr Collins said the non-negotiable offer of £5,000 was totally unacceptable.

where the title (=ownership) of a legal document cannot be sold, exchanged, traded, transferred (=passed from one person or institution to another) or assigned (=where the associated rights and duties are passed from one person or institution to another)

The company issued both negotiable and non-negotiable debt instruments.