The phrase "all necessary approvals" is correct and usable in written English.
It can be used when referring to the required permissions or authorizations needed to proceed with a project or action.
Example: "Before we can move forward with the project, we need to obtain all necessary approvals from the management team."
Alternatives: "all required permissions" or "all essential authorizations".
Mr. Eichner said he has all necessary approvals for the garage.
Scientists should never conduct this type of research without the appropriate facilities, oversight and all necessary approvals".
And no scientist should contemplate this type of research "without the appropriate facilities, oversight and all necessary approvals".
The project is currently in the planning phase and construction work is planned to start in the first half of 2013, subject to all necessary approvals.
A lawyer for the developers, John J. Bennett, said Parrish Pond performed a proper review, received all necessary approvals and had broken no agreements.
Mr Roberts says in his letter to Disney that he is "confident that all necessary approvals can be obtained in a timely fashion".
The couple had received nearly all the necessary approvals from agencies in the United States and India, and Ms. Van Epps expected to leave here with Haseena within two months.
In a statement Friday, his office expressed confidence that if the fund were to be needed, "all the necessary approvals will be in place".
While AT&T continues to exude confidence that their planned acquisition of T-Mobile will get all the necessary approvals, it's starting to look less and less likely.
In the end we gained all the necessary approval from all four RECs five months after lodging the original application with MREC.
The pre-publication history for this paper can be accessed here: http://www.biomedcentral.com/1472-6963/14/165/prepub We thank the National Cancer Control Program of Côte d'Ivoire which enabled us to obtain all the necessary approvals to investigate all government health facilities in the urban area of Abidjan.
