The British broadcaster engaged in a "significant breach" of broadcasting rules by failing to disclose that the presenter of a documentary about Gaza was the child of a Hamas official, as determined by regulatory body Ofcom.
An probe by the media regulator into Gaza: How to Survive a Warzone has found that the programme was "significantly deceptive".
The BBC's director general had already issued an apology, stating there had been "a major oversight in relation to accuracy".
Ofcom has instructed the corporation to transmit a prime-time statement about its findings.
"Given this constitutes a major infringement of our rules, we are ordering the broadcaster to broadcast a statement of our conclusions against it on BBC2 at nine o'clock in the evening, with a schedule to be finalised," it said.
'Possibility to Damage Confidence'
The regulator's announcement stated: "The inquiry we conducted found that the programme's failure to disclose that the narrator's father served in a post in the Hamas-administered administration was significantly deceptive.
"It meant that the viewers did not have essential details which may have been very significant to their evaluation of the presenter and the information he provided.
"Confidence is at the core of the connection between a broadcaster and its public, notably for a national broadcasting corporation such as the BBC.
"This error had the risk to erode the very considerable levels of credibility that audiences would have put in a documentary produced by the BBC about the Israel-Gaza war."
The programme was pulled from iPlayer in last February after the presenter's family links were revealed, and in the month of July an broadcaster's internal assessment found it violated the corporation's journalistic standards on factual correctness.
A BBC spokesperson stated: "The authority's determination is in line with the findings of the corporation's inquiry, that there was a major oversight in the film in relation to the broadcaster's journalistic policies on accuracy, which reflects regulation 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 sanction as soon as the schedule and wording are determined."
