It is grammatically correct and commonly used in written English.
It can be used in situations where something cannot be done or achieved immediately. Example: "We appreciate your suggestion, but unfortunately implementing it is not immediately possible due to budget constraints."
It was not immediately possible to confirm that claim.
It was not immediately possible to reconcile the conflicting statements.
It was not immediately possible to confirm Mr. Ding's detention.
It was not immediately possible to verify the accounts.
(It was not immediately possible to verify those assertions independently).
It was not immediately possible to reach Mr. Ehiem's lawyer.
But there are often good reasons why this may not be immediately possible, and during the briefest of delays, thieves can run up catastrophic charges.
But justice — of a vibrant, cinematic kind — is precisely what those who made the movies seek, even when it does not seem immediately possible.
Despite it not being immediately possible to date the recording, Baghdadi mentions the ongoing situation in Yemen, where a Saudi Arabia-led coalition is launching airstrikes on anti-government rebels.
It may not be immediately possible for the U.S. administration to extradite Gülen, as their legal framework requires a different kind of proof standards than the Turkish authorities can likely provide to them, but it is important that for the first time the U.S. declares a willingness on its side to consider some kind of action.
In most cases, patients were turned supine for chest compressions; however, this is not always immediately possible, due to skull pin fixation, halo fixation, open surgical wounds, or protruding hardware [ 25, 35, 37, 39, 43, 44, 46, 50].
