The British broadcaster engaged in a "significant breach" of broadcasting rules by not revealing that the presenter of a programme about the Gaza situation was the offspring of a Hamas representative, as determined by British broadcasting authority Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the programme was "substantially inaccurate".
The head of the BBC had earlier expressed regret, saying there had been "a serious error in relation to truthfulness".
The regulator has ordered the BBC to broadcast a prime-time statement about its decisions.
"As this represents a serious breach of our code, we are ordering the corporation to air a announcement of our conclusions against it on the BBC's second channel at 9pm, with a schedule to be confirmed," the regulator stated.
'Possibility to Erode Credibility'
The authority's announcement declared: "The inquiry we conducted determined that the film's lack of disclosure that the voice's father held a post in the Hamas-administered administration was materially misleading.
"Consequently that the audience did not have critical information which may have been extremely pertinent to their judgment of the narrator and the details he provided.
"Trust is at the core of the relationship between a television network and its public, notably for a national broadcasting corporation such as the British Broadcasting Corporation.
"This oversight had the risk to erode the significantly high amounts of confidence that viewers would have invested in a factual film from the broadcaster about the Gaza conflict."
The documentary was pulled from the BBC's streaming service in February after the presenter's family links came to light, and in the month of July an internal BBC review concluded it infringed the organization's editorial guidelines on truthfulness.
A corporation official said: "The regulator's decision is in accordance with the findings of the internal assessment, that there was a serious error in the film in relation to the BBC's Editorial Guidelines on accuracy, which aligns with regulation 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 comply with the penalty as soon as the timing and language are finalised."
