The BBC engaged in a "major breach" of media regulations by failing to disclose that the narrator of a film about the Gaza situation was the child of a Hamas representative, as determined by regulatory body Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has found that the film was "significantly deceptive".
The head of the BBC had previously apologised, saying there had been "a major oversight in relation to truthfulness".
The regulator has ordered the BBC to air a peak-time statement about its conclusions.
"As this represents a major infringement of our rules, we are instructing the broadcaster to transmit a statement of our findings against it on the BBC's second channel at 21:00, with a timing to be confirmed," the statement read.
'Risk to Undermine Confidence'
The authority's announcement said: "The inquiry we conducted found that the programme's failure to disclose that the presenter's male guardian occupied a role in the Hamas-controlled government was substantially inaccurate.
"This implied that the viewers did not have essential details which may have been very significant to their evaluation of the presenter and the details he presented.
"Credibility is at the heart of the bond between a media organization and its audience, particularly for a national broadcasting corporation such as the public broadcaster.
"This oversight had the potential to undermine the exceptionally strong degrees of credibility that viewers would have put in a BBC factual programme about the conflict in Gaza."
The film was removed from iPlayer in the month of February after the boy's personal associations were revealed, and in this past July an corporation's own inquiry determined it breached the organization's journalistic standards on accuracy.
A representative for the broadcaster commented: "The regulator's decision is in accordance with the findings of Peter Johnston's review, that there was a major oversight in the documentary in relation to the corporation's content standards on accuracy, which aligns with clause 2.2 of the regulator's media standards.
"We issued an apology for this and we comply with Ofcom's decision in its entirety. We will comply with the sanction as soon as the timing and wording are confirmed."
