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

ceder

verbo

full

assign

verb

Definitions of assign

to formally transfer your property, money, contractual rights or other legal rights to another person

Can B, without A's consent, assign A his rights and obligations?

if you assign a quality to something, you say that that thing has that quality

The court must be cautious not to assign a meaning to the clause that was unintended by the contracting parties.