The public service broadcaster was found to have committed a "major breach" of media regulations by failing to disclose that the presenter of a programme about the Gaza situation was the son of a Hamas official, according to UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the programme was "materially misleading".
The head of the BBC had previously apologised, stating there had been "a serious error in relation to factual correctness".
The authority has instructed the broadcaster to air a evening announcement about its findings.
"Since this amounts to a major infringement of our code, we are instructing the broadcaster to transmit a statement of our determinations against it on BBC2 at 9pm, with a timing to be confirmed," it said.
'Possibility to Damage Trust'
The regulator's report declared: "Our probe found that the film's lack of disclosure that the presenter's parent held a role in the Hamas-controlled authority was significantly deceptive.
"It meant that the public did not have vital facts which may have been extremely pertinent to their assessment of the voice and the information he provided.
"Confidence is at the heart of the bond between a television network and its public, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the risk to erode the exceptionally strong degrees of confidence that viewers would have placed in a BBC factual programme about the conflict in Gaza."
The programme was removed from the BBC's streaming service in the month of February after the presenter's family links came to light, and in July an corporation's own inquiry found it infringed the corporation's content policies on factual correctness.
A representative for the broadcaster stated: "The regulator's decision is in accordance with the conclusions of the internal assessment, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on accuracy, which corresponds to clause 2.2 of the regulator's media standards.
"We have apologised for this and we accept the authority's determination in full. We will follow the penalty as soon as the date and wording are confirmed."
