The British broadcaster was found to have committed a "serious breach" of industry standards by omitting to mention that the voice of a film about the Gaza situation was the son of a Hamas official, according to regulatory body Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a significant failing in relation to accuracy".
Ofcom has ordered the broadcaster to broadcast a prime-time declaration about its conclusions.
"Since this amounts to a significant violation of our rules, we are directing the BBC to air a statement of our conclusions against it on BBC2 at 9pm, with a date to be confirmed," the statement read.
'Risk to Undermine Credibility'
The watchdog's announcement declared: "Our probe concluded that the programme's omission to reveal that the voice's father occupied a position in the Hamas-administered government was materially misleading.
"Consequently that the viewers did not have vital facts which may have been highly relevant to their evaluation of the voice and the information he presented.
"Confidence is at the core of the connection between a broadcaster and its audience, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the risk to undermine the exceptionally strong amounts of confidence that audiences would have placed in a documentary produced by the BBC about the conflict in Gaza."
The film was pulled from the online platform in last February after the presenter's family links came to light, and in this past July an corporation's own inquiry determined it breached the organization's content policies on truthfulness.
A representative for the broadcaster said: "The regulator's decision is in agreement with the results of the corporation's inquiry, that there was a significant failing in the film in relation to the corporation's content standards on accuracy, which aligns with Rule 2.2 of the regulator's media standards.
"We have apologised for this and we agree with the regulator's ruling in full. We will adhere to the directive as soon as the date and wording are determined."