non-binding
adjective(also nonbinding especially in North American English)
that not does not have to be obeyed according to the law 不具约束力：不一定非要依法遵守 The result of the referendum is non-binding. 全民公决的结果没有约束力。 He proposed a non-binding contract. 他提出了一份不具约束力的合同。