The public service broadcaster was found to have committed a "serious breach" of industry standards by not revealing that the presenter of a film about Gaza was the offspring of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the film was "substantially inaccurate".
The head of the BBC had already issued an apology, noting there had been "a major oversight in relation to truthfulness".
Ofcom has instructed the corporation to broadcast a evening announcement about its decisions.
"As this represents a major infringement of our code, we are instructing the corporation to broadcast a statement of our determinations against it on BBC2 at 9pm, with a schedule to be finalised," the regulator stated.
'Possibility to Undermine Confidence'
The authority's announcement declared: "Our probe determined that the programme's lack of disclosure that the voice's male guardian served in a post in the Hamas-run administration was significantly deceptive.
"It meant that the viewers did not have essential details which may have been extremely pertinent to their judgment of the narrator and the information he presented.
"Confidence is at the core of the connection between a media organization and its audience, notably for a public service broadcaster such as the BBC.
"This failing had the risk to undermine the very considerable degrees of credibility that the public would have put in a factual film from the broadcaster about the Gaza conflict."
The programme was removed from the BBC's streaming service in the month of February after the presenter's familial connections emerged, and in July an broadcaster's internal assessment found it violated the corporation's editorial guidelines on truthfulness.
A representative for the broadcaster stated: "The Ofcom ruling is in line with the results of Peter Johnston's review, that there was a significant failing in the documentary in relation to the broadcaster's journalistic policies on accuracy, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we accept the authority's determination in full. We will comply with the sanction as soon as the timing and language are confirmed."
