The phrase 'problem has been caused' is correct and usable in written English.
You can use it when referring to a difficulty or obstacle that has been created as a result of an event or action. For example: "The data breach has caused a serious problem for the company."
The problem has been caused by developed countries.
Even if a problem has been caused by technology, the answer will always be more technology.
Like others in eastern Europe, the Poles think the problem has been caused by richer countries.
The problem has been caused by an increase in "intangible investment" such as "software, data, design and branding".
The second is a cyclical problem has been caused by the financial crisis and has impacted relatively more severely on non-innovative firms.
However, the Department for Environment, Food and Rural Affairs (Defra) has made clear the problem has been caused by a combination of local emissions, light winds, pollution from the continent and dust blown over from Africa.
The eye would eventually recover, and he later learned that the problem had been caused by his contact lenses.
The Wyeth spokesman, Charles F. Hagan, testified that the problem had been caused by a worker's mishandling of vitamins.
In response to a tweet from one customer, he said that the problem had been caused by a server failing in the UK.
Of the energy customers who had a billing problem, 45% said the problem had been caused by a different meter reading being entered on the system to the one supplied.
In Bower's case it says that it has cancelled her account and refunded charges for disrupted service; the problem had been caused, it explains, because it had forgotten to close her billing account and so she was still charged.
