The BBC engaged in a "serious breach" of industry standards by omitting to mention that the voice of a documentary about Gaza was the child of a Hamas administrator, as ruled by UK media regulator Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has concluded that the programme was "materially misleading".
The BBC's director general had already issued an apology, stating there had been "a significant failing in relation to accuracy".
Ofcom has instructed the corporation to transmit a prime-time statement about its findings.
"Since this amounts to a major infringement of our regulations, we are ordering the broadcaster to transmit a statement of our conclusions against it on the BBC's second channel at 21:00, with a date to be confirmed," the statement read.
'Possibility to Damage Trust'
The watchdog's statement said: "Our investigation found that the programme's failure to disclose that the presenter's father occupied a role in the Hamas-controlled government was significantly deceptive.
"Consequently that the audience did not have vital facts which may have been highly relevant to their judgment of the presenter and the information he presented.
"Credibility is at the core of the relationship between a television network and its public, especially for a state-funded media outlet such as the BBC.
"This error had the possibility to erode the exceptionally strong levels of credibility that audiences would have put in a BBC factual programme about the Israel-Gaza war."
The documentary was withdrawn from the BBC's streaming service in last February after the boy's family links came to light, and in the month of July an broadcaster's internal assessment found it violated the corporation's content policies on accuracy.
A representative for the broadcaster stated: "The Ofcom ruling is in agreement with the findings of the internal assessment, that there was a major oversight in the documentary in relation to the broadcaster's journalistic policies on accuracy, which reflects regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we accept the authority's determination in full. We will comply with the directive as soon as the date and language are confirmed."
