The BBC engaged in a "significant breach" of media regulations by omitting to mention that the presenter of a film about Gaza was the child of a Hamas administrator, according to British broadcasting authority Ofcom.
An probe by the media regulator into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "materially misleading".
The BBC's director general had previously apologised, noting there had been "a significant failing in relation to accuracy".
The authority has instructed the broadcaster to air a evening statement about its decisions.
"Since this amounts to a significant violation of our regulations, we are instructing the BBC to broadcast a statement of our conclusions against it on BBC2 at 9pm, with a date to be confirmed," it said.
'Potential to Undermine Credibility'
The watchdog's announcement stated: "The inquiry we conducted found that the documentary's lack of disclosure that the presenter's parent served in a position in the Hamas-administered administration was significantly deceptive.
"It meant that the public did not have vital facts which may have been highly relevant to their evaluation of the voice and the information he presented.
"Trust is at the heart of the relationship between a television network and its public, especially for a public service broadcaster such as the public broadcaster.
"This failing had the risk to erode the very considerable degrees of confidence that viewers would have put in a documentary produced by the BBC about the Gaza conflict."
The film was pulled from the online platform in February after the boy's family links were revealed, and in July an corporation's own inquiry found it violated the organization's content policies on truthfulness.
A representative for the broadcaster stated: "The Ofcom ruling is in agreement with the findings of Peter Johnston's review, that there was a major oversight in the documentary in relation to the BBC's Editorial Guidelines on accuracy, which corresponds to Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we accept the regulator's ruling in full. We will follow the directive as soon as the schedule and wording are finalised."
