The British broadcaster engaged in a "significant breach" of broadcasting rules by not revealing that the narrator of a documentary about Gaza was the child of a Hamas official, as determined by British broadcasting authority Ofcom.
An inquiry by the media regulator into Gaza: How to Survive a Warzone has found that the programme was "materially misleading".
The BBC's director general had earlier expressed regret, stating there had been "a significant failing in relation to factual correctness".
The regulator has instructed the BBC to air a peak-time announcement about its conclusions.
"Given this constitutes a significant violation of our rules, we are directing the BBC to air a statement of our conclusions against it on BBC2 at nine o'clock in the evening, with a timing to be determined," it said.
'Risk to Undermine Credibility'
The authority's announcement stated: "The inquiry we conducted concluded that the film's failure to disclose that the presenter's male guardian held a role in the Hamas-administered administration was significantly deceptive.
"Consequently that the viewers did not have essential details which may have been highly relevant to their evaluation of the voice and the information he provided.
"Credibility is at the core of the bond between a broadcaster and its public, especially for a public service broadcaster such as the public broadcaster.
"This error had the risk to damage the exceptionally strong degrees of trust that viewers would have invested in a factual film from the broadcaster about the Gaza conflict."
The programme was pulled from iPlayer in February after the boy's familial connections were revealed, and in this past July an corporation's own inquiry concluded it infringed the broadcaster's content policies on accuracy.
A BBC spokesperson commented: "The regulator's decision is in accordance with the conclusions of the corporation's inquiry, that there was a significant failing in the programme in relation to the broadcaster's journalistic policies on factual correctness, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we accept Ofcom's decision in complete. We will comply with the directive as soon as the date and language are determined."
