The public service broadcaster engaged in a "major breach" of broadcasting rules by not revealing that the voice of a programme about Gaza was the son of a Hamas representative, according to regulatory body Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "materially misleading".
The head of the BBC had previously apologised, saying there had been "a significant failing in relation to truthfulness".
Ofcom has directed the broadcaster to broadcast a evening statement about its findings.
"Given this constitutes a significant violation of our rules, we are directing the broadcaster to transmit a statement of our determinations against it on BBC Two at 9pm, with a timing to be determined," the regulator stated.
'Risk to Damage Trust'
The watchdog's report declared: "The inquiry we conducted found that the programme's omission to reveal that the narrator's parent served in a role in the Hamas-run authority was substantially inaccurate.
"This implied that the audience did not have essential details which may have been highly relevant to their judgment of the narrator and the information he provided.
"Credibility is at the heart of the connection between a television network and its public, notably for a public service broadcaster such as the public broadcaster.
"This error had the possibility to undermine the very considerable degrees of trust that audiences would have placed in a factual film from the broadcaster about the Gaza conflict."
The programme was withdrawn from iPlayer in last February after the narrator's personal associations were revealed, and in July an broadcaster's internal assessment found it infringed the broadcaster's content policies on accuracy.
A corporation official said: "The regulator's decision is in agreement with the results of the corporation's inquiry, that there was a major oversight in the documentary in relation to the broadcaster's journalistic policies on truthfulness, which corresponds to regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with the regulator's ruling in complete. We will comply with the directive as soon as the timing and wording are determined."
