The public service broadcaster was found to have committed a "significant breach" of media regulations by failing to disclose that the voice of a programme about the Gaza conflict was the offspring of a Hamas administrator, as ruled by UK media regulator Ofcom.
An inquiry by the broadcasting watchdog into Gaza: How to Survive a Warzone has concluded that the programme was "significantly deceptive".
The BBC's director general had already issued an apology, noting there had been "a major oversight in relation to factual correctness".
The authority has instructed the BBC to broadcast a evening statement about its findings.
"Given this constitutes a significant violation of our rules, we are ordering the BBC to broadcast a message of our findings against it on the BBC's second channel at 21:00, with a date to be confirmed," it said.
'Possibility to Undermine Credibility'
The authority's report stated: "Our probe found that the programme's lack of disclosure that the presenter's father occupied a post in the Hamas-run administration was substantially inaccurate.
"It meant that the audience did not have vital facts which may have been highly relevant to their evaluation of the narrator and the content he shared.
"Trust is at the core of the connection between a broadcaster and its audience, particularly for a state-funded media outlet such as the public broadcaster.
"This failing had the possibility to damage the significantly high degrees of confidence that the public would have placed in a documentary produced by the BBC about the conflict in Gaza."
The programme was removed from the online platform in the month of February after the boy's familial connections came to light, and in this past July an corporation's own inquiry determined it breached the broadcaster's content policies on truthfulness.
A corporation official said: "The regulator's decision is in accordance with the findings of the internal assessment, that there was a major oversight in the film in relation to the broadcaster's journalistic policies on accuracy, which aligns with clause 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we comply with the regulator's ruling in complete. We will follow the sanction as soon as the schedule and wording are confirmed."
