The public service broadcaster committed a "significant breach" of media regulations by omitting to mention that the narrator of a documentary about Gaza was the offspring of a Hamas administrator, as ruled by UK media regulator Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has found that the programme was "significantly deceptive".
The BBC's director general had already issued an apology, stating there had been "a major oversight in relation to truthfulness".
Ofcom has directed the BBC to broadcast a evening declaration about its decisions.
"As this represents a major infringement of our rules, we are instructing the broadcaster to broadcast a announcement of our conclusions against it on the BBC's second channel at 9pm, with a date to be confirmed," it said.
'Potential to Undermine Credibility'
The watchdog's announcement declared: "The inquiry we conducted determined that the film's failure to disclose that the narrator's parent held a position in the Hamas-controlled administration was materially misleading.
"It meant that the public did not have essential details which may have been highly relevant to their evaluation of the voice and the information he provided.
"Trust is at the center of the bond between a media organization and its audience, especially for a public service broadcaster such as the BBC.
"This oversight had the risk to erode the exceptionally strong amounts of confidence that viewers would have placed in a documentary produced by the BBC about the conflict in Gaza."
The film was removed from the BBC's streaming service in the month of February after the narrator's family links came to light, and in the month of July an corporation's own inquiry found it breached the broadcaster's editorial guidelines on accuracy.
A BBC spokesperson stated: "The regulator's decision is in agreement with the findings of Peter Johnston's review, that there was a major oversight in the film in relation to the broadcaster's journalistic policies on factual correctness, which aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we accept the regulator's ruling in complete. We will adhere to the directive as soon as the timing and wording are finalised."
