The BBC was found to have committed a "major breach" of broadcasting rules by failing to disclose that the presenter of a programme about the Gaza conflict was the child of a Hamas official, according to UK media regulator Ofcom.
An probe by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has concluded that the film was "substantially inaccurate".
The BBC's director general had previously apologised, stating there had been "a serious error in relation to accuracy".
Ofcom has ordered the broadcaster to broadcast a evening announcement about its decisions.
"Given this constitutes a major infringement of our rules, we are directing the corporation to transmit a announcement of our findings against it on the BBC's second channel at nine o'clock in the evening, with a date to be determined," the regulator stated.
'Risk to Undermine Trust'
The regulator's announcement declared: "Our investigation determined that the documentary's failure to disclose that the voice's father occupied a role in the Hamas-administered authority was materially misleading.
"This implied that the public did not have vital facts which may have been extremely pertinent to their evaluation of the presenter and the information he shared.
"Trust is at the heart of the relationship between a broadcaster and its audience, particularly for a state-funded media outlet such as the public broadcaster.
"This failing had the risk to erode the very considerable amounts of credibility that the public would have put in a factual film from the broadcaster about the Gaza conflict."
The documentary was withdrawn from iPlayer in February after the boy's family links emerged, and in the month of July an internal BBC review concluded it infringed the broadcaster's journalistic standards on truthfulness.
A BBC spokesperson stated: "The authority's determination is in accordance with the conclusions of the internal assessment, that there was a serious error in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which reflects regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we accept the authority's determination in its entirety. We will comply with the penalty as soon as the date and wording are finalised."
