The BBC was found to have committed a "significant breach" of broadcasting rules by failing to disclose that the presenter of a film about the Gaza conflict was the offspring of a Hamas official, as ruled by UK media regulator Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The head of the BBC had already issued an apology, saying there had been "a serious error in relation to truthfulness".
The regulator has ordered the corporation to transmit a evening announcement about its findings.
"Given this constitutes a serious breach of our regulations, we are directing the corporation to transmit a statement of our conclusions against it on BBC Two at 9pm, with a schedule to be finalised," the statement read.
'Potential to Undermine Confidence'
The watchdog's announcement said: "Our probe concluded that the film's failure to disclose that the narrator's parent occupied a position in the Hamas-administered government was materially misleading.
"Consequently that the audience did not have critical information which may have been very significant to their evaluation of the narrator and the details he shared.
"Trust is at the heart of the bond between a media organization and its public, notably for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the potential to undermine the very considerable levels of trust that viewers would have invested in a documentary produced by the BBC about the Israel-Gaza war."
The programme was pulled from the online platform in February after the presenter's family links came to light, and in July an internal BBC review found it violated the broadcaster's content policies on truthfulness.
A corporation official commented: "The regulator's decision is in accordance with the results of the internal assessment, that there was a major oversight in the documentary in relation to the BBC's Editorial Guidelines on truthfulness, which corresponds to clause 2.2 of the regulator's media standards.
"We issued an apology for this and we accept Ofcom's decision in complete. We will adhere to the directive as soon as the timing and wording are determined."
