The public service broadcaster committed a "significant breach" of media regulations by omitting to mention that the narrator of a documentary about the Gaza conflict was the son of a Hamas official, as ruled by regulatory body Ofcom.
An inquiry by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the documentary was "significantly deceptive".
The BBC's director general had previously apologised, noting there had been "a significant failing in relation to accuracy".
The regulator has ordered the BBC to air a prime-time statement about its decisions.
"Given this constitutes a significant violation of our regulations, we are directing the corporation to broadcast a announcement of our findings against it on BBC Two at 21:00, with a schedule to be finalised," the statement read.
'Possibility to Erode Credibility'
The authority's report declared: "Our investigation found that the programme's omission to reveal that the voice's father occupied a post in the Hamas-administered government was significantly deceptive.
"This implied that the public did not have critical information which may have been very significant to their judgment of the presenter and the content he presented.
"Confidence is at the core of the relationship between a broadcaster and its viewers, particularly for a state-funded media outlet such as the public broadcaster.
"This failing had the potential to undermine the exceptionally strong degrees of credibility that the public would have put in a BBC factual programme about the conflict in Gaza."
The film was removed from the BBC's streaming service in last February after the presenter's familial connections were revealed, and in this past July an broadcaster's internal assessment found it infringed the organization's content policies on truthfulness.
A representative for the broadcaster stated: "The authority's determination is in accordance with the conclusions of Peter Johnston's review, that there was a major oversight in the programme in relation to the broadcaster's journalistic policies on accuracy, which corresponds to clause 2.2 of the regulator's media standards.
"We expressed regret for this and we accept Ofcom's decision in full. We will comply with the directive as soon as the date and wording are confirmed."
