The phrase "are only requested" is correct and usable in written English.
It can be used when indicating that something is being asked for or required, but only in a limited or specific manner.
Example: "The documents are only requested if they are relevant to the case."
Alternatives: "are merely asked for" or "are simply requested".
"While the act allows for extensions of time in certain circumstances, the commissioner would expect those extensions are only requested when there is a substantive reason.
Demonstrations allow new actions to be learned and they greatly reduce the amount of exploration required, but they are only requested when they are expected to yield a significant improvement because the teacher's time is considered to be more valuable than the robot's time.
Traffic lanes, he said, are only requested for congested areas and would also be used by athletes, sports officials and members of the media.
An agency worker has to work flexible hours and is only requested to come to work when there is work to be done.
Downing Street said any redactions were only requested on "national security" grounds and contained nothing to suggest UK agencies had participated in torture or rendition.
They were only requested to build their maps as they understood.
In other words, they were not necessary to memorize the contents and were only requested to build their maps as a kind of translation.
Karsa Flash Payer offers a way for content creators to monetize their online video using a bait and switch model in which payment is only requested mid-viewing, once the user is already hooked.
Hence we decided to extend recruitment to the trial, but alter the consent and follow-up procedures so that follow-up was only requested at three months.
Paired questionnaires were only requested from those initially completing the questionnaire on the first collection sample.
Detailed symptom-diaries were only requested during the first week of the study.
