The BBC committed a "serious breach" of industry standards by not revealing that the presenter of a documentary about the Gaza situation was the son of a Hamas administrator, as determined by regulatory body Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had earlier expressed regret, noting there had been "a significant failing in relation to factual correctness".
The regulator has instructed the BBC to transmit a evening statement about its findings.
"As this represents a serious breach of our regulations, we are directing the BBC to broadcast a statement of our findings against it on BBC Two at 9pm, with a schedule to be determined," the statement read.
'Potential to Undermine Credibility'
The regulator's announcement declared: "Our investigation found that the documentary's failure to disclose that the voice's male guardian held a post in the Hamas-run administration was significantly deceptive.
"Consequently that the viewers did not have vital facts which may have been very significant to their judgment of the narrator and the content he shared.
"Credibility is at the heart of the connection between a broadcaster and its viewers, especially for a state-funded media outlet such as the public broadcaster.
"This failing had the risk to damage the exceptionally strong amounts of credibility that viewers would have placed in a BBC factual programme about the Gaza conflict."
The film was pulled from the online platform in last February after the boy's family links emerged, and in this past July an corporation's own inquiry determined it breached the organization's editorial guidelines on factual correctness.
A representative for the broadcaster said: "The regulator's decision is in accordance with the results of Peter Johnston's review, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on factual correctness, which reflects Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we comply with the authority's determination in complete. We will adhere to the directive as soon as the date and wording are confirmed."
