The British broadcaster was found to have committed a "major breach" of broadcasting rules by failing to disclose that the voice of a documentary about the Gaza conflict was the son of a Hamas official, as ruled by regulatory body Ofcom.
An investigation by the broadcasting watchdog into Gaza: How to Survive a Warzone has concluded that the programme was "substantially inaccurate".
The BBC's director general had already issued an apology, noting there had been "a major oversight in relation to accuracy".
The authority has ordered the corporation to broadcast a prime-time declaration about its conclusions.
"Given this constitutes a significant violation of our code, we are ordering the corporation to transmit a statement of our determinations against it on BBC Two at 21:00, with a date to be finalised," the statement read.
'Potential to Damage Confidence'
The authority's statement declared: "Our probe found that the programme's omission to reveal that the voice's male guardian occupied a role in the Hamas-controlled administration was substantially inaccurate.
"This implied that the viewers did not have essential details which may have been highly relevant to their judgment of the voice and the content he presented.
"Credibility is at the center of the relationship between a broadcaster and its viewers, particularly for a national broadcasting corporation such as the British Broadcasting Corporation.
"This oversight had the possibility to undermine the very considerable amounts of trust that the public would have placed in a BBC factual programme about the conflict in Gaza."
The documentary was removed from the online platform in the month of February after the narrator's family links were revealed, and in this past July an internal BBC review determined it infringed the corporation's content policies on truthfulness.
A BBC spokesperson stated: "The authority's determination is in agreement with the results of the corporation's inquiry, that there was a major oversight in the programme in relation to the corporation's content standards on truthfulness, which reflects Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we accept the regulator's ruling in complete. We will comply with the directive as soon as the date and wording are determined."
