The British broadcaster was found to have committed a "significant breach" of broadcasting rules by failing to disclose that the narrator of a programme about Gaza was the child of a Hamas representative, according to British broadcasting authority Ofcom.
An inquiry by the media regulator into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The head of the BBC had earlier expressed regret, stating there had been "a serious error in relation to accuracy".
The authority has ordered the corporation to air a peak-time declaration about its findings.
"Given this constitutes a serious breach of our rules, we are instructing the corporation to broadcast a statement of our conclusions against it on BBC2 at 21:00, with a date to be finalised," it said.
'Potential to Erode Confidence'
The watchdog's announcement declared: "Our probe concluded that the documentary's failure to disclose that the presenter's male guardian occupied a role in the Hamas-controlled administration was substantially inaccurate.
"It meant that the viewers did not have critical information which may have been highly relevant to their assessment of the presenter and the content he provided.
"Trust is at the core of the connection between a broadcaster and its audience, notably for a public service broadcaster such as the British Broadcasting Corporation.
"This error had the risk to erode the exceptionally strong amounts of trust that viewers would have put in a documentary produced by the BBC about the Israel-Gaza war."
The programme was withdrawn from the BBC's streaming service in February after the narrator's familial connections came to light, and in the month of July an broadcaster's internal assessment determined it infringed the broadcaster's content policies on accuracy.
A representative for the broadcaster stated: "The authority's determination is in line with the conclusions of Peter Johnston's review, that there was a serious error in the film in relation to the broadcaster's journalistic policies on accuracy, which reflects clause 2.2 of the regulator's media standards.
"We have apologised for this and we accept the authority's determination in its entirety. We will adhere to the directive as soon as the schedule and language are determined."
