The British broadcaster engaged in a "major breach" of media regulations by failing to disclose that the narrator of a documentary about Gaza was the child of a Hamas administrator, as ruled by UK media regulator Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, saying there had been "a serious error in relation to accuracy".
The authority has instructed the broadcaster to transmit a evening statement about its decisions.
"Given this constitutes a serious breach of our regulations, we are ordering the BBC to transmit a announcement of our conclusions against it on the BBC's second channel at nine o'clock in the evening, with a date to be confirmed," the statement read.
'Risk to Damage Confidence'
The regulator's report said: "Our investigation determined that the film's omission to reveal that the voice's male guardian occupied a position in the Hamas-run government was substantially inaccurate.
"Consequently that the public did not have vital facts which may have been highly relevant to their judgment of the narrator and the content he shared.
"Trust is at the heart of the connection between a broadcaster and its public, especially for a public service broadcaster such as the BBC.
"This error had the risk to damage the very considerable amounts of credibility that audiences would have placed in a documentary produced by the BBC about the Gaza conflict."
The film was withdrawn from iPlayer in February after the narrator's family links emerged, and in July an broadcaster's internal assessment found it infringed the corporation's editorial guidelines on accuracy.
A representative for the broadcaster stated: "The authority's determination is in accordance with the results of Peter Johnston's review, that there was a serious error in the film in relation to the BBC's Editorial Guidelines on accuracy, which reflects Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we accept the authority's determination in complete. We will comply with the sanction as soon as the date and wording are confirmed."
