The BBC committed a "significant breach" of broadcasting rules by failing to disclose that the presenter of a film about Gaza was the offspring of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An probe by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the documentary was "materially misleading".
The BBC's director general had previously apologised, noting there had been "a serious error in relation to truthfulness".
The authority has instructed the broadcaster to broadcast a evening announcement about its findings.
"As this represents a major infringement of our code, we are directing the corporation to broadcast a statement of our conclusions against it on the BBC's second channel at 9pm, with a schedule to be determined," the statement read.
'Possibility to Erode Credibility'
The authority's statement stated: "The inquiry we conducted concluded that the programme's failure to disclose that the voice's parent served in a post in the Hamas-controlled authority was significantly deceptive.
"It meant that the viewers did not have critical information which may have been highly relevant to their assessment of the narrator and the content he presented.
"Credibility is at the center of the relationship between a television network and its audience, particularly for a public service broadcaster such as the public broadcaster.
"This failing had the risk to erode the very considerable degrees of confidence that audiences would have placed 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 personal associations emerged, and in July an internal BBC review determined it violated the organization's content policies on accuracy.
A representative for the broadcaster stated: "The authority's determination is in accordance with the conclusions of the corporation's inquiry, that there was a significant failing in the film in relation to the BBC's Editorial Guidelines on truthfulness, which reflects clause 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we comply with the regulator's ruling in its entirety. We will comply with the directive as soon as the timing and language are confirmed."
