The public service broadcaster was found to have committed a "significant breach" of media regulations by not revealing that the narrator of a programme about the Gaza situation was the son of a Hamas representative, according to British broadcasting authority Ofcom.
An probe by the media regulator into Gaza: How to Survive a Warzone has concluded that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had earlier expressed regret, saying there had been "a serious error in relation to truthfulness".
The regulator has ordered the corporation to broadcast a prime-time statement about its conclusions.
"As this represents a significant violation of our code, we are instructing the BBC to transmit a statement of our conclusions against it on BBC2 at 9pm, with a date to be finalised," the statement read.
'Potential to Undermine Trust'
The watchdog's report declared: "The inquiry we conducted found that the documentary's failure to disclose that the presenter's father held a position in the Hamas-run administration was materially misleading.
"Consequently that the audience did not have essential details which may have been extremely pertinent to their assessment of the presenter and the content he provided.
"Confidence is at the center of the bond between a television network and its viewers, notably for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the potential to damage the very considerable degrees of credibility that audiences would have invested in a BBC factual programme about the Gaza conflict."
The film was withdrawn from the BBC's streaming service in last February after the presenter's personal associations emerged, and in this past July an internal BBC review determined it infringed the organization's journalistic standards on accuracy.
A corporation official commented: "The regulator's decision is in agreement with the conclusions of Peter Johnston's review, that there was a serious error in the film in relation to the broadcaster's journalistic policies on factual correctness, which aligns with Rule 2.2 of the regulator's media standards.
"We have apologised for this and we comply with the regulator's ruling in full. We will adhere to the directive as soon as the schedule and language are determined."