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 conflict was the son of a Hamas representative, as ruled by regulatory body Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has determined that the programme was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, noting there had been "a serious error in relation to truthfulness".
The authority has directed the BBC to broadcast a evening declaration about its decisions.
"Since this amounts to a significant violation of our rules, we are directing the BBC to air a message of our findings against it on BBC2 at nine o'clock in the evening, with a schedule to be confirmed," the regulator stated.
'Possibility to Erode Trust'
The watchdog's report said: "The inquiry we conducted concluded that the documentary's failure to disclose that the presenter's parent served in a post in the Hamas-controlled government was significantly deceptive.
"This implied that the public did not have vital facts which may have been highly relevant to their judgment of the voice and the details he shared.
"Trust is at the heart of the connection between a television network and its viewers, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the risk to damage the exceptionally strong levels of trust that viewers would have placed in a BBC factual programme about the Gaza conflict."
The programme was pulled from the online platform in February after the presenter's personal associations were revealed, and in July an corporation's own inquiry concluded it violated the broadcaster's journalistic standards on truthfulness.
A BBC spokesperson stated: "The authority's determination is in accordance with the results of the internal assessment, that there was a serious error in the film in relation to the broadcaster's journalistic policies on truthfulness, which reflects Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we accept the authority's determination in complete. We will follow the directive as soon as the timing and wording are determined."
