The British broadcaster was found to have committed a "major breach" of broadcasting rules by not revealing that the narrator of a programme about the Gaza conflict was the son of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An inquiry by the broadcasting watchdog into Gaza: How to Survive a Warzone has found that the documentary was "significantly deceptive".
The head of the BBC had previously apologised, noting there had been "a major oversight in relation to truthfulness".
Ofcom has ordered the corporation to broadcast a prime-time announcement about its decisions.
"Given this constitutes a significant violation of our rules, we are ordering the corporation to air a message of our determinations against it on BBC2 at 21:00, with a schedule to be determined," the regulator stated.
'Possibility to Damage Confidence'
The authority's report declared: "The inquiry we conducted found that the programme's failure to disclose that the voice's male guardian served in a position in the Hamas-controlled administration was materially misleading.
"This implied that the public did not have essential details which may have been highly relevant to their evaluation of the voice and the content he provided.
"Trust is at the heart of the bond between a broadcaster and its public, notably for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the possibility to damage the significantly high degrees of trust that viewers would have put in a BBC factual programme about the Israel-Gaza war."
The documentary was pulled from the online platform in February after the presenter's personal associations emerged, and in this past July an broadcaster's internal assessment determined it breached the broadcaster's editorial guidelines on accuracy.
A BBC spokesperson stated: "The Ofcom ruling is in line with the conclusions of Peter Johnston's review, that there was a serious error in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we accept the authority's determination in its entirety. We will adhere to the directive as soon as the timing and wording are confirmed."
