The public service broadcaster was found to have committed a "major breach" of industry standards by not revealing that the narrator of a film about the Gaza situation was the son of a Hamas administrator, according to regulatory body Ofcom.
An investigation by Ofcom into Gaza: How to Survive a Warzone has concluded that the documentary was "significantly deceptive".
The chief executive of the broadcaster had already issued an apology, stating there had been "a major oversight in relation to factual correctness".
The authority has directed the BBC to air a evening statement about its conclusions.
"Since this amounts to a major infringement of our regulations, we are instructing the BBC to transmit a message of our findings against it on BBC2 at 9pm, with a date to be finalised," the statement read.
'Risk to Undermine Trust'
The watchdog's statement stated: "Our probe found that the film's lack of disclosure that the voice's male guardian occupied a role in the Hamas-run government was significantly deceptive.
"Consequently that the audience did not have essential details which may have been highly relevant to their judgment of the presenter and the information he provided.
"Confidence is at the center of the bond between a broadcaster and its viewers, especially for a public service broadcaster such as the BBC.
"This error had the risk to erode the significantly high amounts of trust that audiences would have invested in a factual film from the broadcaster about the Israel-Gaza war."
The film was pulled from the online platform in the month of February after the presenter's personal associations emerged, and in the month of July an broadcaster's internal assessment found it breached the corporation's content policies on accuracy.
A corporation official stated: "The authority's determination is in accordance with the results of the corporation's inquiry, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on truthfulness, which aligns with regulation 2.2 of the regulator's media standards.
"We have apologised for this and we accept Ofcom's decision in its entirety. We will comply with the penalty as soon as the schedule and language are determined."
