The British broadcaster committed a "serious breach" of industry standards by failing to disclose that the narrator of a programme about the Gaza conflict was the offspring of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An inquiry by the media regulator into the programme Gaza: How to Survive a Warzone has concluded that the programme was "materially misleading".
The head of the BBC had previously apologised, stating there had been "a serious error in relation to accuracy".
The authority has ordered the broadcaster to air a prime-time declaration about its decisions.
"As this represents a serious breach of our regulations, we are ordering the broadcaster to broadcast a announcement of our determinations against it on BBC Two at 9pm, with a date to be finalised," the regulator stated.
'Possibility to Erode Confidence'
The regulator's statement stated: "The inquiry we conducted determined that the film's failure to disclose that the presenter's parent occupied a position in the Hamas-administered government was materially misleading.
"Consequently that the viewers did not have vital facts which may have been highly relevant to their judgment of the narrator and the information he presented.
"Trust is at the core of the connection between a television network and its public, particularly for a national broadcasting corporation such as the British Broadcasting Corporation.
"This error had the risk to erode the very considerable levels of confidence that viewers would have put in a factual film from the broadcaster about the Israel-Gaza war."
The documentary was pulled from the BBC's streaming service in the month of February after the presenter's family links came to light, and in July an internal BBC review concluded it violated the corporation's journalistic standards on truthfulness.
A corporation official commented: "The regulator's decision is in accordance with the conclusions of the internal assessment, that there was a significant failing in the documentary in relation to the BBC's Editorial Guidelines on truthfulness, which reflects regulation 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with Ofcom's decision in its entirety. We will comply with the sanction as soon as the date and language are confirmed."
