The phrase "terms upon which" is correct and usable in written English.
It is typically used to introduce a specific set of conditions or requirements that must be met. It is often used in legal or business contexts. Here is an example: "The contract between the two parties clearly outlines the terms upon which the sale will be finalized, including the payment schedule and delivery expectations."
This will set out agreed terms upon which you can leave.
Stay apprised of the key parameters and other terms upon which companies are adopting proxy access.
"Very many MPs accept and respect the referendum of course, but the terms upon which we exit are vitally important.
But there is no mandate for the terms upon which we exit, and the stakes are too high for the prime minister to decide this by herself.
However, there can be no certainty that these discussions will lead to any transaction or any certainty as to the terms upon which any such transaction might proceed".
Soubry said parliament needed to seek answers from May about "the terms upon which she will now embark on the negotiation".
This is a company which signed a new financing agreement with its bankers before Christmas, designed to see it fully funded through until breakeven, and which is now admitting that all the assumptions on near-term profitability upon which the agreement was based were, in fact, fantasy.
The board's decisions were made in reliance on the advice of its investment bankers, including the terms and conditions upon which the securities were to be issued.
It is one thing to prosecute those who, when given lawful access to such information, violate the terms and conditions upon which they were given access and leak classified information.
Like private individuals and businesses, the Government enjoys the unrestricted power to produce its own supplies, to determine those with whom it will deal, and to fix the terms and conditions upon which it will make needed purchases.
"The logic of saying the prime minister can trigger article 50 without first setting out to parliament the terms and basis upon which her government seeks to negotiate – indeed, without even indicating the red lines she will seek to protect – would be to diminish parliament and assume the arrogant powers of a Tudor monarch," he said.
