The British broadcaster was found to have committed a "major breach" of industry standards by not revealing that the narrator of a film about the Gaza conflict was the son of a Hamas administrator, as ruled by regulatory body Ofcom.
An probe by Ofcom into the documentary titled Gaza: How to Survive a Warzone has determined that the documentary was "significantly deceptive".
The BBC's director general had already issued an apology, saying there had been "a serious error in relation to factual correctness".
The authority has ordered the broadcaster to air a prime-time statement about its decisions.
"Since this amounts to a major infringement of our rules, we are ordering the BBC to broadcast a message of our determinations against it on BBC2 at 21:00, with a date to be determined," the statement read.
'Possibility to Erode Credibility'
The authority's statement stated: "Our probe concluded that the programme's omission to reveal that the presenter's parent occupied a post in the Hamas-run authority was substantially inaccurate.
"Consequently that the public did not have critical information which may have been highly relevant to their judgment of the narrator and the information he presented.
"Trust is at the center of the connection between a media organization and its viewers, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the risk to undermine the significantly high amounts of confidence that viewers would have put in a factual film from the broadcaster about the Gaza conflict."
The documentary was pulled from iPlayer in February after the narrator's familial connections were revealed, and in July an broadcaster's internal assessment determined it breached the broadcaster's editorial guidelines on truthfulness.
A corporation official said: "The authority's determination is in agreement with the findings of the corporation's inquiry, that there was a major oversight in the film in relation to the broadcaster's journalistic policies on accuracy, which aligns with regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with Ofcom's decision in complete. We will adhere to the sanction as soon as the schedule and wording are confirmed."
