The public service broadcaster was found to have committed a "significant breach" of industry standards by omitting to mention that the presenter of a programme about the Gaza situation was the child of a Hamas official, according to UK media regulator Ofcom.
An probe by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the film was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, noting there had been "a serious error in relation to truthfulness".
The authority has directed the BBC to air a peak-time announcement about its decisions.
"Since this amounts to a significant violation of our rules, we are instructing the broadcaster to broadcast a message of our conclusions against it on the BBC's second channel at 21:00, with a timing to be determined," the regulator stated.
'Possibility to Erode Confidence'
The watchdog's report declared: "The inquiry we conducted found that the programme's omission to reveal that the presenter's male guardian occupied a position in the Hamas-controlled administration was substantially inaccurate.
"This implied that the audience did not have critical information which may have been highly relevant to their evaluation of the narrator and the details he provided.
"Trust is at the center of the relationship between a television network and its viewers, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the potential to erode the exceptionally strong levels of trust that audiences would have invested in a factual film from the broadcaster about the Gaza conflict."
The programme was withdrawn from the BBC's streaming service in last February after the boy's family links emerged, and in the month of July an internal BBC review found it violated the broadcaster's editorial guidelines on factual correctness.
A BBC spokesperson commented: "The regulator's decision is in line with the findings of the internal assessment, that there was a serious error in the film in relation to the corporation's content standards on factual correctness, which corresponds to regulation 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we comply with the authority's determination in complete. We will comply with the sanction as soon as the timing and wording are determined."
