The BBC committed a "significant breach" of broadcasting rules by failing to disclose that the voice of a programme about the Gaza conflict was the offspring of a Hamas representative, according to British broadcasting authority Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has found that the film was "materially misleading".
The chief executive of the broadcaster had previously apologised, saying there had been "a significant failing in relation to accuracy".
Ofcom has directed the corporation to air a evening statement about its conclusions.
"As this represents a major infringement of our regulations, we are directing the corporation to transmit a statement of our conclusions against it on BBC Two at 21:00, with a timing to be finalised," the regulator stated.
'Potential to Damage Confidence'
The regulator's announcement stated: "The inquiry we conducted concluded that the documentary's lack of disclosure that the narrator's father occupied a position in the Hamas-run administration was substantially inaccurate.
"It meant that the viewers did not have essential details which may have been highly relevant to their judgment of the voice and the information he presented.
"Credibility is at the center of the connection between a television network and its viewers, notably for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the potential to damage the significantly high levels of trust that the public would have put in a factual film from the broadcaster about the Israel-Gaza war."
The documentary was withdrawn from the BBC's streaming service in last February after the narrator's personal associations emerged, and in the month of July an internal BBC review found it breached the broadcaster's content policies on factual correctness.
A representative for the broadcaster said: "The regulator's decision is in line 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 aligns with clause 2.2 of the regulator's media standards.
"We expressed regret for this and we accept the authority's determination in its entirety. We will comply with the directive as soon as the schedule and language are determined."
