The British broadcaster committed a "major breach" of media regulations by not revealing that the presenter of a programme about Gaza was the offspring of a Hamas representative, according to regulatory body Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The chief executive of the broadcaster had already issued an apology, stating there had been "a serious error in relation to factual correctness".
The regulator has directed the corporation to air a prime-time declaration about its decisions.
"Given this constitutes a significant violation of our regulations, we are directing the BBC to transmit a statement of our findings against it on BBC Two at 21:00, with a timing to be confirmed," it said.
'Risk to Erode Credibility'
The regulator's report stated: "The inquiry we conducted concluded that the programme's failure to disclose that the narrator's parent held a post in the Hamas-run government was significantly deceptive.
"It meant that the viewers did not have essential details which may have been extremely pertinent to their evaluation of the narrator and the information he provided.
"Credibility is at the heart of the bond between a television network and its public, particularly for a public service broadcaster such as the public broadcaster.
"This oversight had the risk to erode the exceptionally strong amounts of credibility that viewers would have invested in a documentary produced by the BBC about the conflict in Gaza."
The film was withdrawn from iPlayer in last February after the boy's familial connections were revealed, and in July an corporation's own inquiry concluded it violated the broadcaster's journalistic standards on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in agreement with the conclusions of the internal assessment, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on truthfulness, which reflects Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we agree with the regulator's ruling in full. We will follow the directive as soon as the timing and language are determined."
