Has been is correct, since we are talking about the present. We wouldn't use have been since that would go with referees, plural, not referee singular. To use had been, we would be talking about something that happened in the past. For example, last year no referee had been sent a request.
Most likely it should read "...referee's decision."
The soccer referee should be a maverick.
You should not capitalize a sentence fragment following a colon.
Per Bernards request, do you have adobe professional installed on your pc?
No this sentence is not correct. Its not that clear who is doing what in your sentence so its hard to give a correct sentence. stipulate means to set down/specify/insist upon In your sentence the 'request' may stipulate some thing. The person 'I' would comply with a request. So maybe your sentence should be: I will comply with your request, please forward the documents for review.
A question mark.
An assist referee should know all about football. He should know as much as the referee so that if the referee is blinded or very far away the assistanat referee could give decession after consulting with the referee.
You could, but this would be incorrect grammatically. Rather, you should write "Attached is a copy of your request."
A question that is phrased as a request should end with a question mark. This punctuation indicates that the sentence is seeking information or confirmation from the listener.
an outlook briefing.
A requisition can be a form or a request for something that is required. An example sentence is: That requisition should persuade him to hand it over.
Yes