The public service broadcaster was found to have committed a "significant breach" of industry standards by failing to disclose that the narrator of a programme about Gaza was the child of a Hamas representative, as ruled by UK media regulator Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the documentary was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, saying there had been "a major oversight in relation to truthfulness".
The regulator has instructed the corporation to air a peak-time statement about its conclusions.
"As this represents a serious breach of our rules, we are directing the corporation to broadcast a message of our findings against it on BBC Two at 9pm, with a schedule to be confirmed," the regulator stated.
'Risk to Undermine Confidence'
The authority's report declared: "Our investigation found that the documentary's lack of disclosure that the narrator's parent served in a post in the Hamas-controlled government was significantly deceptive.
"It meant that the audience did not have vital facts which may have been highly relevant to their assessment of the presenter and the details he provided.
"Trust is at the heart of the relationship between a media organization and its audience, particularly for a public service broadcaster such as the BBC.
"This error had the risk to damage the significantly high levels of confidence that the public would have put in a documentary produced by the BBC about the conflict in Gaza."
The film was removed from iPlayer in February after the narrator's personal associations came to light, and in the month of July an internal BBC review concluded it violated the broadcaster's editorial guidelines on factual correctness.
A representative for the broadcaster stated: "The regulator's decision is in accordance with the results of the corporation's inquiry, that there was a major oversight in the programme in relation to the BBC's Editorial Guidelines on truthfulness, which aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we accept Ofcom's decision in complete. We will comply with the penalty as soon as the date and wording are confirmed."
