The British broadcaster engaged in a "significant breach" of industry standards by omitting to mention that the presenter of a programme about the Gaza situation was the child of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An probe by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the programme was "materially misleading".
The BBC's director general had previously apologised, stating there had been "a major oversight in relation to accuracy".
The regulator has directed the broadcaster to broadcast a evening statement about its decisions.
"As this represents a significant violation of our code, we are instructing the broadcaster to transmit a message of our determinations against it on the BBC's second channel at 9pm, with a schedule to be finalised," it said.
'Possibility to Undermine Confidence'
The regulator's announcement declared: "Our investigation found that the documentary's omission to reveal that the voice's father occupied a position in the Hamas-controlled government was significantly deceptive.
"Consequently that the public did not have critical information which may have been extremely pertinent to their assessment of the narrator and the content he shared.
"Credibility is at the heart of the relationship between a television network and its public, notably for a state-funded media outlet such as the British Broadcasting Corporation.
"This failing had the potential to undermine the very considerable degrees of confidence that the public would have invested in a factual film from the broadcaster about the Gaza conflict."
The programme was pulled from the BBC's streaming service in last February after the narrator's familial connections emerged, and in July an broadcaster's internal assessment determined it violated the organization's content policies on truthfulness.
A representative for the broadcaster stated: "The regulator's decision is in agreement with the conclusions of the internal assessment, that there was a major oversight in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which reflects regulation 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we agree with the regulator's ruling in full. We will comply with the sanction as soon as the timing and language are confirmed."
