The British broadcaster was found to have committed a "significant breach" of broadcasting rules by not revealing that the presenter of a documentary about the Gaza conflict was the child of a Hamas official, as ruled by regulatory body Ofcom.
An inquiry by Ofcom into the programme Gaza: How to Survive a Warzone has concluded that the programme was "materially misleading".
The head of the BBC had already issued an apology, stating there had been "a serious error in relation to accuracy".
The authority has ordered the broadcaster to air a prime-time statement about its findings.
"Given this constitutes a serious breach of our regulations, we are directing the broadcaster to broadcast a message of our determinations against it on the BBC's second channel at nine o'clock in the evening, with a schedule to be finalised," the statement read.
'Possibility to Erode Credibility'
The authority's report declared: "The inquiry we conducted found that the film's omission to reveal that the narrator's male guardian occupied a role in the Hamas-administered government was substantially inaccurate.
"Consequently that the public did not have essential details which may have been very significant to their assessment of the voice and the details he shared.
"Trust is at the center of the bond between a television network and its public, especially for a national broadcasting corporation such as the BBC.
"This oversight had the possibility to erode the significantly high degrees of trust that viewers would have placed in a factual film from the broadcaster about the conflict in Gaza."
The documentary was withdrawn from the BBC's streaming service in February after the presenter's personal associations came to light, and in the month of July an broadcaster's internal assessment found it breached the broadcaster's journalistic standards on factual correctness.
A representative for the broadcaster commented: "The regulator's decision is in accordance with the conclusions of Peter Johnston's review, that there was a serious error in the documentary in relation to the corporation's content standards on truthfulness, which aligns with clause 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with the regulator's ruling in its entirety. We will follow the sanction as soon as the schedule and wording are confirmed."
