The phrase "allowed to maintain a" is correct and usable in written English.
It can be used when discussing permissions or rights to keep or continue something, such as a position, status, or condition.
Example: "Employees are allowed to maintain a flexible work schedule as long as they meet their deadlines."
Alternatives: "permitted to keep a" or "authorized to uphold a".
Like nearly all other countries, Iran does not formally recognise the Taliban as the government of Afghanistan, but it is allowed to maintain a consulate at Herat in the west of the country.
A diplomat close to the negotiators said they seemed "pretty close" to resolving the Gaza dispute, which has centered on Israel's demand that it be allowed to maintain a security presence along the main road that runs the length of the Gaza Strip.
But Israel insists it should be allowed to maintain a long-term military presence along the border with Jordan.
But there's a reason why former intelligence and law enforcement officials are allowed to maintain a clearance.
During the Yanukovych era, for instance, the oligarch was allowed to maintain a stake in the state oil company.
Under the deal, struck between Iran, China, France, Russia, the U.K. and the U.S., Iran was required to significantly scale back its nuclear infrastructure in exchange for some sanctions relief, but is allowed to maintain a peaceful nuclear program.
British dependence on undisturbed copper production meant that white mine workers were allowed to maintain an industrial colour bar.
After the war, Germany was demilitarized; when, in 1952, the country was again allowed to maintain an army, Alois Ostermeier immediately signed up.
With 10 hours of driving and 8 hours of sleep, drivers were allowed to maintain an 18-hour cycle, disrupting the driver's natural 24-hour circadian rhythm.
One of the terms of the Treaty of Versailles, which had been in place since the end of World War I, stated that Germany was not allowed to maintain an air force.
A small heating power (0.1 W) applied on the shunted cold reservoir allows to maintain a constant subcooling (1 K).
