The public service broadcaster was found to have committed a "significant breach" of broadcasting rules by not revealing that the voice of a documentary about the Gaza conflict was the son of a Hamas representative, as determined by British broadcasting authority Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has determined that the documentary was "materially misleading".
The chief executive of the broadcaster had already issued an apology, stating there had been "a significant failing in relation to accuracy".
Ofcom has instructed the broadcaster to air a evening announcement about its findings.
"Since this amounts to a serious breach of our rules, we are instructing the corporation to air a message of our conclusions against it on BBC Two at 21:00, with a date to be determined," it said.
'Potential to Erode Confidence'
The watchdog's statement declared: "Our probe determined that the film's omission to reveal that the presenter's parent held a role in the Hamas-controlled authority was substantially inaccurate.
"This implied that the viewers did not have critical information which may have been highly relevant to their judgment of the voice and the information he presented.
"Confidence is at the core of the connection between a broadcaster and its audience, especially for a public service broadcaster such as the public broadcaster.
"This oversight had the possibility to undermine the exceptionally strong levels of trust that viewers would have invested in a BBC factual programme about the Israel-Gaza war."
The documentary was removed from iPlayer in last February after the presenter's familial connections emerged, and in this past July an broadcaster's internal assessment found it infringed the broadcaster's content policies on factual correctness.
A corporation official said: "The Ofcom ruling is in line with the conclusions of the corporation's inquiry, that there was a major oversight in the film in relation to the broadcaster's journalistic policies on factual correctness, which corresponds to Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we comply with Ofcom's decision in complete. We will follow the penalty as soon as the timing and language are finalised."
