The public service broadcaster engaged in a "serious breach" of media regulations by not revealing that the voice of a film about the Gaza situation was the child of a Hamas official, as determined by UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The head of the BBC had already issued an apology, stating there had been "a serious error in relation to factual correctness".
The authority has directed the broadcaster to transmit a evening announcement about its decisions.
"Since this amounts to a significant violation of our rules, we are directing the BBC to transmit a announcement of our conclusions against it on BBC Two at 21:00, with a schedule to be confirmed," it said.
'Risk to Undermine Credibility'
The regulator's announcement said: "Our investigation found that the documentary's failure to disclose that the narrator's father served in a role in the Hamas-run authority was substantially inaccurate.
"This implied that the audience did not have vital facts which may have been extremely pertinent to their judgment of the narrator and the information he presented.
"Credibility is at the core of the relationship between a television network and its audience, notably for a state-funded media outlet such as the BBC.
"This error had the potential to damage the significantly high degrees of credibility that viewers would have placed in a BBC factual programme about the Gaza conflict."
The programme was withdrawn from the online platform in last February after the presenter's familial connections emerged, and in July an corporation's own inquiry found it breached the organization's content policies on accuracy.
A corporation official stated: "The Ofcom ruling is in accordance with the results of Peter Johnston's review, that there was a major oversight in the programme in relation to the corporation's content standards on accuracy, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we comply with the authority's determination in complete. We will follow the directive as soon as the date and wording are finalised."
