The British broadcaster was found to have committed a "major breach" of industry standards by failing to disclose that the voice of a documentary about the Gaza situation was the son of a Hamas administrator, as ruled by regulatory body Ofcom.
An investigation by the media regulator into the documentary titled Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The chief executive of the broadcaster had previously apologised, stating there had been "a serious error in relation to factual correctness".
Ofcom has ordered the broadcaster to air a peak-time announcement about its conclusions.
"Given this constitutes a serious breach of our regulations, we are directing the broadcaster to transmit a message of our conclusions against it on BBC Two at nine o'clock in the evening, with a schedule to be finalised," it said.
'Potential to Damage Confidence'
The watchdog's report declared: "Our probe determined that the film's lack of disclosure that the presenter's father occupied a role in the Hamas-run government was significantly deceptive.
"This implied that the viewers did not have essential details which may have been extremely pertinent to their assessment of the narrator and the content he provided.
"Confidence is at the core of the relationship between a television network and its audience, especially for a national broadcasting corporation such as the British Broadcasting Corporation.
"This error had the risk to damage the significantly high amounts of credibility that viewers would have put in a documentary produced by the BBC about the Gaza conflict."
The film was removed from iPlayer in February after the presenter's familial connections came to light, and in July an broadcaster's internal assessment determined it violated the organization's content policies on truthfulness.
A BBC spokesperson stated: "The regulator's decision is in line with the results of the internal assessment, that there was a significant failing in the film in relation to the BBC's Editorial Guidelines on truthfulness, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we accept Ofcom's decision in complete. We will comply with the directive as soon as the date and wording are finalised."
