The BBC was found to have committed a "major breach" of media regulations by failing to disclose that the narrator of a programme about Gaza was the offspring of a Hamas representative, as determined by UK media regulator Ofcom.
An inquiry by the media regulator into the programme Gaza: How to Survive a Warzone has found that the programme was "significantly deceptive".
The BBC's director general had already issued an apology, noting there had been "a serious error in relation to factual correctness".
The regulator has instructed the corporation to transmit a evening declaration about its decisions.
"As this represents a serious breach of our rules, we are directing the broadcaster to transmit a announcement of our conclusions against it on BBC Two at nine o'clock in the evening, with a date to be determined," the statement read.
'Risk to Undermine Trust'
The authority's report stated: "Our investigation found that the programme's omission to reveal that the narrator's father served in a post in the Hamas-controlled authority was substantially inaccurate.
"Consequently that the public did not have critical information which may have been highly relevant to their judgment of the voice and the details he provided.
"Confidence is at the core of the connection between a television network and its viewers, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the possibility to erode the significantly high amounts of credibility that the public would have placed in a documentary produced by the BBC about the Israel-Gaza war."
The documentary was removed from the online platform in the month of February after the narrator's personal associations came to light, and in this past July an internal BBC review determined it infringed the broadcaster's editorial guidelines on factual correctness.
A representative for the broadcaster said: "The authority's determination is in accordance with the conclusions of the internal assessment, that there was a major oversight in the film in relation to the corporation's content standards on accuracy, which reflects regulation 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we agree with the regulator's ruling in its entirety. We will comply with the sanction as soon as the timing and language are confirmed."
