The BBC committed a "major breach" of media regulations by failing to disclose that the narrator of a documentary about the Gaza conflict was the son of a Hamas official, as ruled by British broadcasting authority Ofcom.
An probe by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "significantly deceptive".
The BBC's director general had previously apologised, stating there had been "a serious error in relation to truthfulness".
The authority has ordered the broadcaster to air a evening declaration about its conclusions.
"Given this constitutes a significant violation of our code, we are directing the corporation to transmit a statement of our conclusions against it on the BBC's second channel at 9pm, with a schedule to be determined," the statement read.
'Risk to Undermine Trust'
The regulator's report said: "Our probe found that the film's lack of disclosure that the narrator's father occupied a role in the Hamas-controlled government was substantially inaccurate.
"Consequently that the audience did not have vital facts which may have been highly relevant to their judgment of the narrator and the content he presented.
"Trust is at the heart of the bond between a broadcaster and its audience, notably for a public service broadcaster such as the BBC.
"This oversight had the risk to damage the exceptionally strong amounts of confidence that the public would have placed in a BBC factual programme about the Gaza conflict."
The film was withdrawn from the BBC's streaming service in last February after the presenter's personal associations were revealed, and in this past July an broadcaster's internal assessment concluded it infringed the corporation's content policies on truthfulness.
A corporation official stated: "The authority's determination is in line with the findings of the corporation's inquiry, that there was a major oversight in the film in relation to the broadcaster's journalistic policies on factual correctness, which aligns with clause 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with the regulator's ruling in its entirety. We will comply with the directive as soon as the schedule and language are finalised."