The British broadcaster engaged in a "major breach" of media regulations by failing to disclose that the voice of a documentary about the Gaza situation was the child of a Hamas representative, as ruled by regulatory body Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The head of the BBC had earlier expressed regret, stating there had been "a major oversight in relation to accuracy".
The authority has ordered the BBC to air a peak-time declaration about its decisions.
"As this represents a major infringement of our code, we are directing the corporation to broadcast a statement of our determinations against it on BBC Two at 9pm, with a schedule to be confirmed," it said.
'Potential to Undermine Confidence'
The regulator's announcement declared: "Our probe found that the film's lack of disclosure that the narrator's male guardian occupied a role in the Hamas-controlled administration was materially misleading.
"It meant that the public did not have critical information which may have been extremely pertinent to their judgment of the presenter and the content he presented.
"Trust is at the heart of the connection between a television network and its public, particularly for a state-funded media outlet such as the BBC.
"This error had the potential to damage the very considerable degrees of confidence that audiences would have invested in a BBC factual programme about the conflict in Gaza."
The film was pulled from iPlayer in last February after the presenter's familial connections came to light, and in this past July an corporation's own inquiry found it breached the corporation's content policies on factual correctness.
A representative for the broadcaster stated: "The authority's determination is in accordance with the findings of the internal assessment, that there was a serious error in the documentary in relation to the corporation's content standards on truthfulness, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we accept Ofcom's decision in complete. We will follow the penalty as soon as the timing and wording are confirmed."
