The phrase "agreement necessary" is correct and usable in written English.
It can be used in contexts where a consensus or formal approval is required before proceeding with a particular action or decision.
Example: "Before we can move forward with the project, an agreement necessary must be reached among all stakeholders."
Alternatives: "consensus required" or "approval needed".
The changes to the BBC agreement necessary to bring the corporation under Ofcom at tiers one and two fall somewhat short of achieving the promised level playing field - even at these basic levels.
Why is an international agreement necessary?
This seems to diminish the amount of agreement necessary to make a society legitimate.
This fact makes it very difficult to formulate the agreement necessary to introduce a proportional carbon tax.
A strong environment chapter is certainly not the only part of a trade agreement necessary to protect our land, water, and natural resources, but it is especially critical when viewed in historical context and in the current context of the TPP negotiations.
And foreign carriers can serve regional airports without the bilateral agreements necessary for access to Haneda and Narita, making it easier to add routes.
Mr. Nolan testified that about four or five parties had signed nondisclosure agreements, necessary for potential bidders to conduct due diligence.
The 15-member European Union had been the largest of six remaining trade organization members that had not yet concluded the separate market-access agreements necessary for Beijing's membership.
Barker, the Conservative energy minister, said the problems were being rectified – for instance, issues with drawing up the legal agreements necessary for suppliers to offer financial services through the Green Deal Finance Company were being ironed out.
Hoover Dam is named in honour of Herbert Hoover, the U.S. president during whose administration (1929 33) construction began on the dam and whose work as commerce secretary in the 1920s secured agreements necessary for the project to proceed.
JUNEAU, Alaska (AP) — One of two companies planning to build major natural gas pipelines in Alaska has dropped its bid, saying Tuesday that it had not obtained the agreements necessary to justify going forward.
