The BBC engaged in a "major breach" of industry standards by failing to disclose that the voice of a programme about Gaza was the son of a Hamas administrator, according to British broadcasting authority Ofcom.
An investigation by Ofcom 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, stating there had been "a major oversight in relation to accuracy".
Ofcom has ordered the BBC to transmit a evening statement about its conclusions.
"Since this amounts to a significant violation of our code, we are instructing the corporation to broadcast a announcement of our determinations against it on BBC Two at 9pm, with a timing to be confirmed," the statement read.
'Possibility to Erode Trust'
The authority's announcement stated: "The inquiry we conducted concluded that the programme's omission to reveal that the presenter's parent served in a role in the Hamas-controlled government was significantly deceptive.
"This implied that the public did not have vital facts which may have been very significant to their evaluation of the voice and the details he shared.
"Trust is at the center of the connection between a television network and its public, especially for a state-funded media outlet such as the public broadcaster.
"This failing had the possibility to damage the very considerable degrees of trust that viewers would have invested in a factual film from the broadcaster about the Gaza conflict."
The film was withdrawn from the BBC's streaming service in the month of February after the presenter's family links were revealed, and in July an broadcaster's internal assessment determined it violated the corporation's journalistic standards on truthfulness.
A BBC spokesperson stated: "The Ofcom ruling is in agreement with the conclusions of the internal assessment, that there was a major oversight in the programme in relation to the corporation's content standards on truthfulness, which corresponds to Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we accept the regulator's ruling in complete. We will follow the directive as soon as the date and wording are confirmed."
