The public service broadcaster engaged in a "serious breach" of media regulations by not revealing that the presenter of a film about Gaza was the son of a Hamas official, according to British broadcasting authority Ofcom.
An inquiry by Ofcom into the programme Gaza: How to Survive a Warzone has found that the film was "materially misleading".
The chief executive of the broadcaster had previously apologised, stating there had been "a major oversight in relation to truthfulness".
The authority has directed the broadcaster to transmit a evening announcement about its findings.
"Since this amounts to a serious breach of our regulations, we are ordering the broadcaster to transmit a announcement of our conclusions against it on BBC2 at nine o'clock in the evening, with a timing to be determined," it said.
'Risk to Damage Confidence'
The regulator's announcement stated: "Our investigation concluded that the documentary's lack of disclosure that the voice's parent occupied a post in the Hamas-controlled administration was substantially inaccurate.
"Consequently that the public did not have essential details which may have been highly relevant to their judgment of the presenter and the content he presented.
"Trust is at the center of the bond between a media organization and its audience, particularly for a national broadcasting corporation such as the British Broadcasting Corporation.
"This failing had the potential to damage the very considerable degrees of trust that the public would have placed in a factual film from the broadcaster about the Israel-Gaza war."
The film was pulled from the online platform in the month of February after the narrator's familial connections came to light, and in the month of July an internal BBC review determined it infringed the organization's journalistic standards on factual correctness.
A BBC spokesperson stated: "The regulator's decision is in line with the findings of Peter Johnston's review, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on accuracy, which corresponds to regulation 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we comply with the authority's determination in its entirety. We will comply with the sanction as soon as the schedule and wording are confirmed."
