The public service broadcaster engaged in a "major breach" of broadcasting rules by omitting to mention that the voice of a documentary about Gaza was the child of a Hamas official, according to regulatory body Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has found that the programme was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, noting there had been "a significant failing in relation to factual correctness".
The regulator has instructed the broadcaster to broadcast a prime-time announcement about its findings.
"Given this constitutes a significant violation of our rules, we are ordering the BBC to broadcast a announcement of our findings against it on BBC2 at 21:00, with a timing to be confirmed," the regulator stated.
'Risk to Damage Credibility'
The watchdog's announcement stated: "Our investigation determined that the programme's failure to disclose that the presenter's father held a position in the Hamas-administered administration was materially misleading.
"Consequently that the audience did not have essential details which may have been highly relevant to their assessment of the narrator and the content he presented.
"Confidence is at the center of the bond between a media organization and its viewers, especially for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the possibility to erode the very considerable amounts of trust that viewers would have placed in a BBC factual programme about the Israel-Gaza war."
The programme was removed from the online platform in the month of February after the boy's familial connections emerged, and in July an corporation's own inquiry found it infringed the corporation's journalistic standards on truthfulness.
A representative for the broadcaster said: "The regulator's decision is in accordance with the conclusions of the corporation's inquiry, that there was a serious error in the programme in relation to the corporation's content standards on accuracy, which corresponds to regulation 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we agree with the regulator's ruling in its entirety. We will comply with the sanction as soon as the timing and wording are determined."
