The BBC was found to have committed a "major breach" of media regulations by omitting to mention that the voice of a programme about the Gaza conflict was the offspring of a Hamas representative, according to British broadcasting authority Ofcom.
An probe by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The head of the BBC had previously apologised, noting there had been "a significant failing in relation to factual correctness".
The regulator has instructed the corporation to transmit a prime-time declaration about its findings.
"As this represents a major infringement of our code, we are ordering the BBC to broadcast a message of our determinations against it on BBC Two at 21:00, with a date to be determined," the statement read.
'Potential to Undermine Credibility'
The regulator's report said: "Our probe found that the film's lack of disclosure that the presenter's parent served in a post in the Hamas-run administration was substantially inaccurate.
"It meant that the public did not have essential details which may have been extremely pertinent to their evaluation of the presenter and the content he presented.
"Confidence is at the center of the connection between a broadcaster and its audience, especially for a state-funded media outlet such as the public broadcaster.
"This error had the potential to erode the significantly high degrees of credibility that audiences would have put in a documentary produced by the BBC about the Gaza conflict."
The documentary was pulled from the BBC's streaming service in the month of February after the boy's personal associations were revealed, and in this past July an corporation's own inquiry concluded it breached the organization's journalistic standards on accuracy.
A corporation official stated: "The authority's determination is in agreement with the findings of Peter Johnston's review, that there was a major oversight in the film in relation to the corporation's content standards on accuracy, which aligns with regulation 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we agree with the regulator's ruling in full. We will comply with the penalty as soon as the date and wording are determined."
