The British broadcaster committed a "major breach" of broadcasting rules by omitting to mention that the voice of a film about the Gaza situation was the son of a Hamas representative, as ruled by regulatory body Ofcom.
An probe by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the documentary was "materially misleading".
The head of the BBC had already issued an apology, noting there had been "a serious error in relation to truthfulness".
The regulator has directed the corporation to broadcast a peak-time announcement about its conclusions.
"Given this constitutes a significant violation of our code, we are ordering the corporation to air a statement of our determinations against it on the BBC's second channel at 9pm, with a schedule to be determined," it said.
'Risk to Undermine Credibility'
The authority's report said: "The inquiry we conducted found that the programme's omission to reveal that the presenter's parent occupied a role in the Hamas-run authority was significantly deceptive.
"It meant that the viewers did not have essential details which may have been highly relevant to their assessment of the voice and the details he presented.
"Confidence is at the heart of the relationship between a broadcaster and its viewers, especially for a public service broadcaster such as the BBC.
"This failing had the risk to damage the significantly high degrees of confidence that viewers would have placed in a BBC factual programme about the conflict in Gaza."
The documentary was removed from the online platform in last February after the boy's familial connections came to light, and in this past July an corporation's own inquiry determined it violated the broadcaster's editorial guidelines on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in accordance with the conclusions of the corporation's inquiry, that there was a significant failing in the film in relation to the BBC's Editorial Guidelines on truthfulness, which corresponds to Rule 2.2 of the regulator's media standards.
"We have apologised for this and we comply with the authority's determination in full. We will follow the sanction as soon as the timing and wording are confirmed."
