The BBC engaged in a "significant breach" of broadcasting rules by failing to disclose that the voice of a documentary about Gaza was the son of a Hamas representative, as ruled by UK media regulator Ofcom.
An probe by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the film was "substantially inaccurate".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a serious error in relation to accuracy".
Ofcom has ordered the corporation to air a prime-time announcement about its findings.
"Given this constitutes a serious breach of our code, we are instructing the broadcaster to transmit a message of our conclusions against it on BBC Two at 21:00, with a timing to be finalised," the statement read.
'Possibility to Damage Confidence'
The regulator's statement stated: "Our probe determined that the programme's lack of disclosure that the presenter's father occupied a role in the Hamas-administered administration was materially misleading.
"Consequently that the audience did not have essential details which may have been extremely pertinent to their assessment of the narrator and the details he shared.
"Credibility is at the heart of the bond between a broadcaster and its public, especially for a state-funded media outlet such as the British Broadcasting Corporation.
"This failing had the risk to damage the very considerable levels of trust that audiences would have put in a BBC factual programme about the Gaza conflict."
The film was removed from the online platform in February after the boy's personal associations came to light, and in this past July an internal BBC review determined it breached the corporation's editorial guidelines on accuracy.
A representative for the broadcaster commented: "The authority's determination is in accordance with the results of the internal assessment, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on factual correctness, which aligns with clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept the authority's determination in complete. We will comply with the directive as soon as the date and wording are finalised."
