The BBC was found to have committed a "significant breach" of industry standards by not revealing that the voice of a documentary about the Gaza conflict was the son of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An inquiry by Ofcom into the programme Gaza: How to Survive a Warzone has concluded that the programme was "significantly deceptive".
The chief executive of the broadcaster had already issued an apology, saying there had been "a significant failing in relation to factual correctness".
The authority has ordered the broadcaster to broadcast a peak-time statement about its decisions.
"Given this constitutes a major infringement of our code, we are ordering the broadcaster to air a message of our findings against it on BBC2 at 9pm, with a schedule to be confirmed," the statement read.
'Risk to Erode Credibility'
The authority's announcement declared: "The inquiry we conducted concluded that the documentary's omission to reveal that the presenter's father served in a position in the Hamas-run administration was significantly deceptive.
"Consequently that the audience did not have essential details which may have been extremely pertinent to their evaluation of the voice and the details he provided.
"Trust is at the core of the connection between a television network and its public, especially for a national broadcasting corporation such as the public broadcaster.
"This failing had the potential to undermine the significantly high degrees of confidence that viewers would have placed in a documentary produced by the BBC about the Israel-Gaza war."
The film was removed from iPlayer in February after the narrator's familial connections were revealed, and in this past July an internal BBC review found it violated the organization's content policies on truthfulness.
A corporation official said: "The regulator's decision is in agreement with the conclusions of the corporation's inquiry, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on factual correctness, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we comply with the regulator's ruling in its entirety. We will adhere to the directive as soon as the date and wording are confirmed."
