The BBC engaged in a "significant breach" of broadcasting rules by failing to disclose that the voice of a film about Gaza was the son of a Hamas official, as ruled by UK media regulator Ofcom.
An probe by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the programme was "substantially inaccurate".
The head of the BBC had previously apologised, saying there had been "a significant failing in relation to factual correctness".
The regulator has ordered the broadcaster to air a prime-time declaration about its decisions.
"As this represents a serious breach of our regulations, we are ordering the BBC to air a announcement of our findings against it on BBC Two at nine o'clock in the evening, with a date to be determined," the regulator stated.
'Potential to Erode Confidence'
The regulator's announcement stated: "Our investigation determined that the film's lack of disclosure that the voice's father occupied a post in the Hamas-administered authority was substantially inaccurate.
"This implied that the audience did not have critical information which may have been very significant to their assessment of the presenter and the information he presented.
"Trust is at the heart of the connection between a television network and its audience, notably for a state-funded media outlet such as the British Broadcasting Corporation.
"This failing had the risk to undermine the very considerable levels of credibility that audiences would have placed in a factual film from the broadcaster about the Gaza conflict."
The film was pulled from iPlayer in February after the narrator's personal associations emerged, and in the month of July an broadcaster's internal assessment determined it violated the broadcaster's content policies on factual correctness.
A representative for the broadcaster said: "The Ofcom ruling is in line with the findings of the internal assessment, that there was a serious error in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which reflects clause 2.2 of the regulator's media standards.
"We have apologised for this and we accept Ofcom's decision in complete. We will comply with the sanction as soon as the timing and wording are determined."
