"enduring request" is correct and usable in written English.
You can use it to describe a request that has been, or is hoped to be, durable and lasting. For example: The Prime Minister made an enduring request for more international aid to be distributed to those in poverty.
In "Believing Is Seeing," Morris explores and refines our most basic way of understanding the world, which is also a plea for attention, an invitation to communal experience, an expression of urgency, an exclamation of wonder and one of our first, most important and most enduring requests of each other: Look!
Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, described the military and diplomatic offensive for the first time on Monday, as he arrived in Iraq for consultations with commanders and to press the Iraqi government for a quick decision on whether it would request an enduring American military commitment beyond the end of the year.
That is why advocates of voluntary euthanasia have argued that normally a cooling off period should be required before euthanasia is permitted to ensure that the request is enduring.
He had a particularly enduring friendship with Nelson, who personally requested his services as his captain of the fleet.
It is certainly true that a request to die may not reflect an enduring desire to die (just as some attempts to commit suicide may reflect only temporary despair).
A second, related objection to the moral and legal permissibility of voluntary euthanasia turns on the claim that we can never have sufficient evidence to be justified in believing that a dying person's request to be helped to die is competent, enduring and genuinely voluntary.
We see his thought develop, but glimpse also the begging letters to his mother, requesting an advance on his inheritance, along with the enduring anxiety over whether he can provide for the wife he has loved since he was a teenager.
"An advance request allows the process to be undertaken before the suffering is enduring and intolerable.
With that in mind, we request your assistance during this horrible sideshow of a campaign that our country is enduring.
I posted requests for practical help as I had nothing with me and my husband was enduring a long night of driving alone.
He thought about enduring.
