The BBC committed a "major breach" of industry standards by omitting to mention that the voice of a programme about the Gaza situation was the son of a Hamas administrator, according to regulatory body Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "materially misleading".
The chief executive of the broadcaster had previously apologised, stating there had been "a serious error in relation to factual correctness".
The authority has directed the broadcaster to transmit a peak-time statement about its conclusions.
"As this represents a significant violation of our code, we are directing the corporation to air a statement of our determinations against it on BBC2 at 21:00, with a schedule to be confirmed," the regulator stated.
'Risk to Undermine Confidence'
The authority's announcement said: "The inquiry we conducted found that the documentary's omission to reveal that the narrator's father served in a role in the Hamas-controlled administration was materially misleading.
"This implied that the viewers did not have critical information which may have been very significant to their evaluation of the voice and the details he shared.
"Trust is at the core of the relationship between a television network and its viewers, especially for a national broadcasting corporation such as the public broadcaster.
"This oversight had the risk to damage the exceptionally strong degrees of credibility that viewers would have invested in a factual film from the broadcaster about the Gaza conflict."
The film was withdrawn from the BBC's streaming service in the month of February after the boy's personal associations emerged, and in this past July an internal BBC review found it violated the corporation's journalistic standards on accuracy.
A BBC spokesperson said: "The regulator's decision is in line with the findings of the internal assessment, that there was a serious error in the programme in relation to the BBC's Editorial Guidelines on truthfulness, which corresponds to regulation 2.2 of the regulator's media standards.
"We have apologised for this and we comply with Ofcom's decision in full. We will comply with the directive as soon as the date and wording are confirmed."
