The public service broadcaster was found to have committed a "significant breach" of broadcasting rules by omitting to mention that the presenter of a documentary about the Gaza conflict was the son of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An investigation by the media regulator into the documentary titled Gaza: How to Survive a Warzone has determined that the documentary was "materially misleading".
The head of the BBC had already issued an apology, stating there had been "a major oversight in relation to truthfulness".
Ofcom has ordered the broadcaster to air a prime-time announcement about its findings.
"Since this amounts to a significant violation of our rules, we are instructing the BBC to air a announcement of our findings against it on BBC Two at 9pm, with a timing to be confirmed," the regulator stated.
'Potential to Erode Confidence'
The watchdog's report said: "Our probe determined that the film's failure to disclose that the voice's parent held a role in the Hamas-administered administration was significantly deceptive.
"Consequently that the audience did not have essential details which may have been very significant to their judgment of the narrator and the information he provided.
"Trust is at the center of the connection between a media organization and its audience, notably for a state-funded media outlet such as the public broadcaster.
"This oversight had the potential to damage the significantly high amounts of credibility that viewers would have invested in a BBC factual programme about the Israel-Gaza war."
The film was pulled from iPlayer in last February after the narrator's family links came to light, and in this past July an internal BBC review determined it breached the corporation's content policies on truthfulness.
A BBC spokesperson said: "The authority's determination is in agreement with the findings of the corporation's inquiry, that there was a major oversight in the film in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to clause 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we accept Ofcom's decision in full. We will comply with the directive as soon as the schedule and wording are confirmed."
