The British broadcaster committed a "serious breach" of media regulations by omitting to mention that the presenter of a programme about the Gaza conflict was the offspring of a Hamas administrator, as ruled by regulatory body Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has determined that the documentary was "materially misleading".
The head of the BBC had earlier expressed regret, noting there had been "a major oversight in relation to accuracy".
Ofcom has ordered the corporation to air a evening declaration about its decisions.
"As this represents a significant violation of our code, we are ordering the broadcaster to broadcast a announcement of our findings against it on the BBC's second channel at 21:00, with a date to be confirmed," the regulator stated.
'Possibility to Damage Trust'
The regulator's report said: "Our investigation concluded that the film's lack of disclosure that the narrator's father occupied a post in the Hamas-administered government was significantly deceptive.
"This implied that the viewers did not have essential details which may have been very significant to their evaluation of the presenter and the information he presented.
"Credibility is at the center of the bond between a television network and its audience, notably for a state-funded media outlet such as the public broadcaster.
"This oversight had the possibility to erode the very considerable amounts of trust that audiences would have put in a documentary produced by the BBC about the Israel-Gaza war."
The documentary was pulled from the online platform in February after the presenter's personal associations emerged, and in this past July an broadcaster's internal assessment concluded it infringed the organization's editorial guidelines on factual correctness.
A BBC spokesperson said: "The regulator's decision is in accordance with the findings of the internal assessment, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on accuracy, which reflects Rule 2.2 of the regulator's media standards.
"We have apologised for this and we comply with the regulator's ruling in complete. We will follow the penalty as soon as the date and wording are determined."
