"upon instructions" is correct and usable in written English.
You can use it in a sentence when you wish to refer to something that has been done as a result of someone else's commands or directions. Example: I awoke early this morning to complete the assignment upon instructions from my professor.
Some outlets lingered in the West Wing hallway out of frustration but were asked by a Secret Service agent, upon instructions from the White House press office, to leave the area.
Consensual contracts needed nothing except verbal or written agreement between the parties, and though there were only four such contracts known to the law, they were the most important in ordinary life sale, hire of things or services, partnership, and mandate (acting upon instructions).
A purpose of this paper is to assess the extent that a business organisation who supplies an essay or written work upon instructions from a student in return for money might be liable under the criminal law of England and Wales for an offence under the Fraud Act 2006 (The Act) (UK Government 2006).
Upon instructions from Erika, Largo finds then uses his Largo-Phone and the club's sound system to knock out power in the immediate area of the club.
Edward's elder sister, acting upon instructions from their mother, had met Princess Alexandra at Strelitz in June; the young Danish princess made a very favourable impression.
If, despite explanation, doubt remains about the treatment content or when patients are not motivated to act upon instructions of the therapists, the treatment will be ceased.
Several components need to be addressed concomitantly with new management technology centered upon instruction, learning, performance evaluation and professional development.
Evacuate the building if the fire alarm sounds and/or upon instruction by response personnel.
That is made clear by the reference to "massive crimes" being committed "upon instruction of a few persons who control the organisations that execute the orders".
The concern of academicians regarding the understanding achieved upon instruction of electricity has given rise to the development of various instruments.
"It is indeed a characteristic of the situation in Libya that massive crimes are reportedly committed upon instruction of a few persons who control the organisations that execute the orders," Moreno-Ocampo said.
