The BBC was found to have committed a "major breach" of industry standards by not revealing that the narrator of a film about Gaza was the offspring of a Hamas administrator, as determined by regulatory body Ofcom.
An probe by the media regulator into Gaza: How to Survive a Warzone has concluded that the programme was "materially misleading".
The chief executive of the broadcaster had earlier expressed regret, saying there had been "a serious error in relation to truthfulness".
The regulator has ordered the corporation to air a evening statement about its conclusions.
"As this represents a significant violation of our rules, we are directing the broadcaster to broadcast a message of our findings against it on the BBC's second channel at 21:00, with a timing to be finalised," the regulator stated.
'Possibility to Erode Trust'
The regulator's report declared: "Our investigation found that the documentary's omission to reveal that the presenter's father occupied a position in the Hamas-run authority was materially misleading.
"Consequently that the viewers did not have essential details which may have been extremely pertinent to their assessment of the narrator and the details he shared.
"Credibility is at the core of the connection between a broadcaster and its audience, especially for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the possibility to undermine the exceptionally strong levels of credibility that the public would have put in a factual film from the broadcaster about the Israel-Gaza war."
The programme was removed from the online platform in the month of February after the boy's familial connections came to light, and in this past July an broadcaster's internal assessment determined it infringed the organization's editorial guidelines on factual correctness.
A representative for the broadcaster stated: "The Ofcom ruling is in line with the results of the corporation's inquiry, that there was a major oversight in the documentary in relation to the BBC's Editorial Guidelines on accuracy, which reflects clause 2.2 of the regulator's media standards.
"We issued an apology for this and we agree with the authority's determination in full. We will follow the directive as soon as the date and wording are determined."
