The public service broadcaster committed a "significant breach" of industry standards by not revealing that the voice of a documentary about the Gaza situation was the child of a Hamas representative, as ruled by UK media regulator Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the documentary was "significantly deceptive".
The BBC's director general had already issued an apology, stating there had been "a serious error in relation to accuracy".
The regulator has instructed the BBC to transmit a peak-time declaration about its findings.
"Given this constitutes a major infringement of our rules, we are directing the BBC to broadcast a statement of our conclusions against it on BBC Two at 21:00, with a schedule to be finalised," the regulator stated.
'Potential to Erode Confidence'
The watchdog's announcement stated: "Our probe concluded that the film's failure to disclose that the presenter's father held a role in the Hamas-administered administration was materially misleading.
"It meant that the viewers did not have vital facts which may have been highly relevant to their judgment of the presenter and the details he provided.
"Credibility is at the heart of the connection between a television network and its viewers, especially for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the possibility to damage the very considerable amounts of confidence that audiences would have placed in a factual film from the broadcaster about the Gaza conflict."
The programme was withdrawn from the BBC's streaming service in February after the narrator's family links emerged, and in this past July an corporation's own inquiry determined it violated the corporation's journalistic standards on accuracy.
A corporation official commented: "The authority's determination is in accordance with the results of the internal assessment, that there was a major oversight in the programme in relation to the broadcaster's journalistic policies on truthfulness, which corresponds to regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we accept the authority's determination in full. We will adhere to the directive as soon as the schedule and language are confirmed."
