The BBC was found to have committed a "major breach" of industry standards by omitting to mention that the presenter of a documentary about the Gaza situation was the child of a Hamas administrator, as determined by regulatory body Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the programme was "significantly deceptive".
The chief executive of the broadcaster had already issued an apology, saying there had been "a serious error in relation to accuracy".
Ofcom has directed the corporation to broadcast a evening declaration about its findings.
"Since this amounts to a major infringement of our code, we are directing the BBC to air a announcement of our conclusions against it on BBC Two at 9pm, with a timing to be finalised," the statement read.
'Possibility to Undermine Credibility'
The authority's statement declared: "Our investigation found that the programme's failure to disclose that the presenter's parent held a role in the Hamas-controlled government was significantly deceptive.
"This implied that the public did not have critical information which may have been extremely pertinent to their evaluation of the presenter and the details he provided.
"Trust is at the heart of the relationship between a media organization and its public, notably for a national broadcasting corporation such as the British Broadcasting Corporation.
"This failing had the potential to undermine the exceptionally strong amounts of confidence that audiences would have put in a documentary produced by the BBC about the conflict in Gaza."
The documentary was removed from the online platform in last February after the narrator's family links came to light, and in July an broadcaster's internal assessment determined it violated the corporation's editorial guidelines on accuracy.
A corporation official stated: "The authority's determination is in accordance with the findings of Peter Johnston's review, that there was a significant failing in the documentary in relation to the BBC's Editorial Guidelines on accuracy, which corresponds to regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with Ofcom's decision in full. We will comply with the sanction as soon as the schedule and wording are confirmed."
