The BBC was found to have committed a "significant breach" of industry standards by not revealing that the presenter of a documentary about Gaza was the son of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An probe by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the film was "materially misleading".
The BBC's director general had already issued an apology, stating there had been "a major oversight in relation to accuracy".
Ofcom has instructed the corporation to air a prime-time statement about its decisions.
"As this represents a major infringement of our regulations, we are ordering the broadcaster to broadcast a statement of our findings against it on the BBC's second channel at 9pm, with a timing to be confirmed," the regulator stated.
'Potential to Damage Credibility'
The watchdog's announcement said: "Our probe found that the programme's omission to reveal that the narrator's male guardian occupied a role in the Hamas-controlled government was substantially inaccurate.
"It meant that the public did not have critical information which may have been very significant to their evaluation of the voice and the details he presented.
"Confidence is at the heart of the bond between a television network and its viewers, particularly for a public service broadcaster such as the public broadcaster.
"This failing had the potential to erode the exceptionally strong levels of credibility that audiences would have placed in a documentary produced by the BBC about the Gaza conflict."
The programme was withdrawn from iPlayer in last February after the narrator's family links emerged, and in the month of July an internal BBC review concluded it breached the corporation's content policies on truthfulness.
A BBC spokesperson stated: "The authority's determination is in line with the conclusions of the corporation's inquiry, that there was a serious error in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to regulation 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we accept the authority's determination in its entirety. We will follow the directive as soon as the timing and wording are finalised."
