The phrase 'has been agreed upon' is correct and usable in written English. You can use it to describe an agreement or consensus that has been reached between two or more people. For example: "The details of the contract have been agreed upon and will be drawn up by the end of the week."
A bilateral cease-fire has been agreed upon and extended until Oct. 31.
But, suitors, as the contest has been agreed upon, let it go forward.
Nothing has been agreed upon -- except the value of continuing to explore the options.
They must also prove their good intentions by beginning to apply what has been agreed upon in Sweden.
Once the advisee-adviser pairing has been agreed upon by the adviser and the student, the chosen adviser takes over academic and research advising.
Once a rate has been agreed upon, it will be accepted and used by all Federal agencies unless prohibited or limited by statute.
This view has been agreed upon since the events occurred until more than 2600 years later when Islam declared it was the other way around.
The working document which has been agreed upon does modify, add on to, and therefore make cross-references to, the existing Treaties.
As yet, no clear-cut, universally applicable definition that would demarcate the base of the lowermost Cambrian strata has been agreed upon.
They ensure that once a deal has been agreed upon it will be honoured, even if one of the parties goes bust.
At the time he said he hoped it could be sorted out, and clearly something has been agreed upon, although the details remain murky.
When I feel like I can't trust my brain 100%, Ludwig really comes in handy. It makes me translate and proofread faster and my output more reliable.
Claudia Letizia
Head Translator and Proofreader @ organictranslations.eu