The phrase "has been required" is correct and usable in written English. It is a passive tense form of the verb "require," meaning that something was requested or demanded. For example, "A doctor's note proving his illness has been required before he can return to work."
As a result, he has been required to pay alimony.
From Confucius onwards, the artist has been required to have a public role.
I thought, well, I'll bluff through – but very little bluffing has been required.
No other institution has been required to take extra precautionary measures.
*More disclosure has been required of municipalities when they issue bonds to investors.
Edge has been required to describe her ordeal on many occasions since then.
Restatement of doctrine has been required whenever Christianity crossed a linguistic boundary.
Numerical modeling has been required to predict springback and improve the understanding of the forming process.
Since 1974, Congress has been required to pass a nonbinding annual budget.
All that has been required to obtain Palestinian agreement was Israeli compliance with international law.
Nothing further has been required of me by those who have sent goods to me".
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.
Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com