The BBC was found to have committed a "major breach" of industry standards by failing to disclose that the presenter of a documentary about the Gaza situation was the offspring of a Hamas administrator, as ruled by regulatory body Ofcom.
An investigation by the broadcasting watchdog into Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The BBC's director general had already issued an apology, stating there had been "a serious error in relation to factual correctness".
Ofcom has instructed the broadcaster to transmit a peak-time declaration about its conclusions.
"Given this constitutes a major infringement of our rules, we are directing the BBC to broadcast a message of our conclusions against it on the BBC's second channel at 21:00, with a date to be determined," the regulator stated.
'Potential to Erode Trust'
The watchdog's announcement declared: "Our probe concluded that the documentary's omission to reveal that the presenter's father served in a post in the Hamas-administered authority was substantially inaccurate.
"It meant that the public did not have critical information which may have been very significant to their evaluation of the narrator and the information he shared.
"Trust is at the core of the connection between a broadcaster and its audience, notably for a public service broadcaster such as the BBC.
"This oversight had the possibility to undermine the exceptionally strong amounts of confidence that the public would have put in a documentary produced by the BBC about the Gaza conflict."
The film was pulled from the BBC's streaming service in February after the boy's familial connections were revealed, and in the month of July an broadcaster's internal assessment determined it infringed the corporation's journalistic standards on accuracy.
A representative for the broadcaster commented: "The authority's determination is in line with the findings of Peter Johnston's review, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on factual correctness, which reflects clause 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we accept Ofcom's decision in complete. We will follow the penalty as soon as the date and wording are determined."
