The British broadcaster was found to have committed a "significant breach" of broadcasting rules by failing to disclose that the narrator of a programme about the Gaza conflict was the child of a Hamas official, as ruled by regulatory body Ofcom.
An probe by Ofcom into Gaza: How to Survive a Warzone has concluded that the programme was "substantially inaccurate".
The BBC's director general had already issued an apology, saying there had been "a major oversight in relation to factual correctness".
The authority has directed the corporation to air a prime-time statement about its decisions.
"Given this constitutes a significant violation of our regulations, we are directing the broadcaster to air a announcement of our findings against it on the BBC's second channel at 9pm, with a timing to be confirmed," the regulator stated.
'Potential to Undermine Credibility'
The regulator's announcement said: "Our probe concluded that the programme's failure to disclose that the narrator's male guardian served in a role in the Hamas-administered authority was substantially inaccurate.
"Consequently that the public did not have critical information which may have been highly relevant to their assessment of the presenter and the details he shared.
"Confidence is at the center of the relationship between a broadcaster and its viewers, notably for a state-funded media outlet such as the British Broadcasting Corporation.
"This oversight had the potential to damage the very considerable levels of credibility that audiences would have put in a factual film from the broadcaster about the Israel-Gaza war."
The film was withdrawn from the BBC's streaming service in February after the presenter's personal associations were revealed, and in this past July an broadcaster's internal assessment concluded it breached the broadcaster's journalistic standards on truthfulness.
A corporation official said: "The authority's determination is in accordance with the findings of Peter Johnston's review, that there was a significant failing in the programme in relation to the broadcaster's journalistic policies on factual correctness, which corresponds to Rule 2.2 of the regulator's media standards.
"We have apologised for this and we agree with the authority's determination in full. We will adhere to the directive as soon as the timing and wording are determined."
