The BBC was found to have committed a "significant breach" of industry standards by not revealing that the voice of a film about the Gaza situation was the son of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An probe by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the film was "significantly deceptive".
The BBC's director general had earlier expressed regret, noting there had been "a major oversight in relation to truthfulness".
The authority has ordered the broadcaster to broadcast a prime-time declaration about its conclusions.
"As this represents a serious breach of our regulations, we are ordering the corporation to transmit a statement of our findings against it on the BBC's second channel at 9pm, with a timing to be determined," it said.
'Risk to Undermine Credibility'
The regulator's statement stated: "Our probe concluded that the film's failure to disclose that the narrator's father held a role in the Hamas-administered administration was substantially inaccurate.
"This implied that the public did not have essential details which may have been highly relevant to their assessment of the voice and the information he presented.
"Confidence is at the center of the bond between a media organization and its public, particularly for a national broadcasting corporation such as the BBC.
"This oversight had the risk to erode the very considerable levels of trust that audiences would have put in a BBC factual programme about the Gaza conflict."
The film was withdrawn from iPlayer in the month of February after the presenter's family links emerged, and in the month of July an internal BBC review determined it violated the organization's journalistic standards on factual correctness.
A representative for the broadcaster stated: "The Ofcom ruling is in accordance with the results of the corporation's inquiry, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on truthfulness, which reflects regulation 2.2 of the regulator's media standards.
"We have apologised for this and we accept the authority's determination in complete. We will comply with the directive as soon as the schedule and wording are confirmed."
