The British broadcaster committed a "serious breach" of broadcasting rules by not revealing that the voice of a film about the Gaza situation was the son of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An probe by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has concluded that the film was "materially misleading".
The BBC's director general had already issued an apology, saying there had been "a serious error in relation to accuracy".
The authority has directed the corporation to transmit a prime-time statement about its findings.
"Given this constitutes a significant violation of our rules, we are instructing the corporation to transmit a statement of our findings against it on BBC Two at 21:00, with a date to be determined," the statement read.
'Possibility to Undermine Credibility'
The watchdog's announcement stated: "Our probe concluded that the documentary's lack of disclosure that the voice's male guardian served in a post in the Hamas-controlled authority was substantially inaccurate.
"It meant that the viewers did not have essential details which may have been highly relevant to their judgment of the narrator and the content he presented.
"Confidence is at the center of the relationship between a television network and its audience, notably for a state-funded media outlet such as the public broadcaster.
"This oversight had the risk to damage the significantly high degrees of confidence that audiences would have put in a documentary produced by the BBC about the Israel-Gaza war."
The programme was pulled from iPlayer in the month of February after the presenter's family links emerged, and in this past July an internal BBC review determined it infringed the organization's editorial guidelines on factual correctness.
A BBC spokesperson said: "The authority's determination is in line with the conclusions of the corporation's inquiry, that there was a serious error in the film in relation to the corporation's content standards on truthfulness, which corresponds to Rule 2.2 of the regulator's media standards.
"We issued an apology for this and we accept the authority's determination in full. We will comply with the directive as soon as the schedule and language are confirmed."
