The BBC committed a "major breach" of industry standards by omitting to mention that the voice of a programme about the Gaza situation was the son of a Hamas official, as determined by regulatory body Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The head of the BBC had previously apologised, noting there had been "a serious error in relation to factual correctness".
Ofcom has instructed the corporation to transmit a prime-time announcement about its conclusions.
"Given this constitutes a serious breach of our code, we are directing the broadcaster to air a statement of our determinations against it on BBC2 at nine o'clock in the evening, with a date to be determined," the regulator stated.
'Potential to Undermine Trust'
The watchdog's statement said: "Our probe found that the documentary's omission to reveal that the voice's male guardian occupied a post in the Hamas-administered administration was materially misleading.
"Consequently that the public did not have vital facts which may have been very significant to their judgment of the presenter and the content he provided.
"Confidence is at the heart of the connection between a broadcaster and its audience, notably for a public service broadcaster such as the public broadcaster.
"This failing had the possibility to undermine the very considerable amounts of confidence that audiences would have put in a documentary produced by the BBC about the Gaza conflict."
The film was removed from the online platform in the month of February after the presenter's family links emerged, and in this past July an broadcaster's internal assessment found it infringed the organization's editorial guidelines on accuracy.
A representative for the broadcaster stated: "The regulator's decision is in agreement with the conclusions of the internal assessment, that there was a major oversight in the film in relation to the broadcaster's journalistic policies on truthfulness, which reflects clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we comply with the regulator's ruling in complete. We will follow the directive as soon as the schedule and language are finalised."
