The British broadcaster engaged in a "significant breach" of broadcasting rules by omitting to mention that the voice of a programme about the Gaza conflict was the child of a Hamas administrator, according to UK media regulator Ofcom.
An probe by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the film was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, noting there had been "a major oversight in relation to truthfulness".
The authority has ordered the corporation to air a peak-time announcement about its decisions.
"Since this amounts to a serious breach of our regulations, we are directing the corporation to transmit a statement of our conclusions against it on the BBC's second channel at 9pm, with a schedule to be finalised," it said.
'Risk to Erode Credibility'
The regulator's report declared: "Our probe found that the documentary's lack of disclosure that the presenter's father served in a post in the Hamas-administered administration was significantly deceptive.
"It meant that the audience did not have essential details which may have been very significant to their evaluation of the presenter and the content he provided.
"Confidence is at the core of the connection between a broadcaster and its audience, especially for a state-funded media outlet such as the British Broadcasting Corporation.
"This oversight had the risk to undermine the very considerable levels of trust that the public 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 boy's family links emerged, and in July an broadcaster's internal assessment found it violated the corporation's content policies on truthfulness.
A BBC spokesperson stated: "The authority's determination is in accordance with the results of Peter Johnston's review, that there was a significant failing in the film in relation to the BBC's Editorial Guidelines on factual correctness, which reflects Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we agree with the authority's determination in full. We will comply with the directive as soon as the timing and wording are determined."