The British broadcaster was found to have committed a "significant breach" of media regulations by omitting to mention that the narrator of a programme about the Gaza situation was the son of a Hamas administrator, according to British broadcasting authority Ofcom.
An investigation by the media regulator into Gaza: How to Survive a Warzone has concluded that the programme was "materially misleading".
The head of the BBC had earlier expressed regret, saying there had been "a significant failing in relation to factual correctness".
The regulator has ordered the broadcaster to transmit a prime-time statement about its conclusions.
"As this represents a major infringement of our code, we are instructing the broadcaster to air a message of our determinations against it on BBC Two at 9pm, with a timing to be confirmed," the statement read.
'Risk to Erode Trust'
The regulator's report stated: "Our investigation concluded that the programme's lack of disclosure that the presenter's father occupied a post in the Hamas-administered authority was significantly deceptive.
"This implied that the public did not have critical information which may have been very significant to their judgment of the voice and the content he provided.
"Confidence is at the core of the bond between a broadcaster and its viewers, especially for a national broadcasting corporation such as the British Broadcasting Corporation.
"This error had the possibility to erode the very considerable levels of trust that audiences would have put in a BBC factual programme about the Gaza conflict."
The documentary was withdrawn from the online platform in the month of February after the narrator's familial connections emerged, and in July an corporation's own inquiry found it breached the organization's journalistic standards on factual correctness.
A representative for the broadcaster stated: "The authority's determination is in agreement with the findings of Peter Johnston's review, that there was a serious error in the programme in relation to the corporation's content standards on truthfulness, which aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with the authority's determination in full. We will comply with the directive as soon as the schedule and wording are determined."
