The phrase "agreed deadline" refers to a specific date or time by which a task or job should be completed, and everyone involved has come to a mutual understanding and acceptance of this timeframe. Full definition
I'll agree a deadline with you in advance of accepting the review. (bookandbrew.net)
Brazil, they say, is in the process of a national consultation to set revised targets, which will be announced before the internationally agreed deadline next year. (chimalaya.org)
Ms. Picciotto and her team have been quick to respond and very conscientious in meeting agreed deadlines. (onpointlaw.com)