The BBC committed a "significant breach" of media regulations by failing to disclose that the narrator of a film about the Gaza conflict was the child of a Hamas official, as ruled by regulatory body Ofcom.
An probe by the media regulator into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "materially misleading".
The head of the BBC had previously apologised, stating there had been "a significant failing in relation to accuracy".
The regulator has ordered the corporation to broadcast a evening announcement about its conclusions.
"Since this amounts to a major infringement of our code, we are directing the corporation to transmit a announcement of our conclusions against it on the BBC's second channel at 9pm, with a timing to be determined," the regulator stated.
'Risk to Erode Confidence'
The regulator's report stated: "Our probe found that the programme's failure to disclose that the presenter's parent occupied a position in the Hamas-run government was substantially inaccurate.
"It meant that the audience did not have essential details which may have been very significant to their judgment of the narrator and the details he shared.
"Credibility is at the center of the relationship between a television network and its viewers, notably for a national broadcasting corporation such as the public broadcaster.
"This failing had the possibility to undermine the significantly high levels of trust that audiences would have invested in a documentary produced by the BBC about the Israel-Gaza war."
The film was removed from the BBC's streaming service in the month of February after the boy's family links came to light, and in this past July an corporation's own inquiry determined it breached the organization's journalistic standards on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in line with the findings of Peter Johnston's review, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which reflects Rule 2.2 of the regulator's media standards.
"We issued an apology for this and we comply with the regulator's ruling in complete. We will comply with the sanction as soon as the timing and wording are finalised."
