The BBC engaged in a "significant breach" of media regulations by not revealing that the presenter of a documentary about Gaza was the child of a Hamas administrator, according to regulatory body Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The chief executive of the broadcaster had already issued an apology, noting there had been "a serious error in relation to accuracy".
The regulator has instructed the corporation to air a peak-time declaration about its decisions.
"As this represents a serious breach of our regulations, we are instructing the corporation to transmit a statement of our findings against it on the BBC's second channel at 9pm, with a schedule to be determined," it said.
'Potential to Damage Credibility'
The watchdog's statement said: "Our probe found that the documentary's lack of disclosure that the voice's father served in a role in the Hamas-controlled government was substantially inaccurate.
"This implied that the viewers did not have vital facts which may have been extremely pertinent to their assessment of the voice and the content he provided.
"Trust is at the core of the relationship between a broadcaster and its viewers, particularly for a state-funded media outlet such as the BBC.
"This error had the risk to erode the very considerable amounts of credibility that viewers would have put in a BBC factual programme about the Gaza conflict."
The programme was pulled from iPlayer in the month of February after the presenter's personal associations were revealed, and in the month of July an broadcaster's internal assessment found it infringed the broadcaster's journalistic standards on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in accordance with the findings of the internal assessment, that there was a serious error in the programme in relation to the BBC's Editorial Guidelines on accuracy, which aligns with regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we accept the regulator's ruling in full. We will comply with the directive as soon as the date and language are determined."
