The public service broadcaster committed a "serious breach" of industry standards by failing to disclose that the presenter of a film about Gaza was the offspring of a Hamas official, according to UK media regulator Ofcom.
An probe by the media regulator into the programme Gaza: How to Survive a Warzone has found that the film was "significantly deceptive".
The BBC's director general had previously apologised, stating there had been "a significant failing in relation to factual correctness".
The regulator has directed the corporation to transmit a prime-time statement about its findings.
"Since this amounts to a major infringement of our code, we are ordering the BBC to air a statement of our findings against it on the BBC's second channel at 9pm, with a schedule to be confirmed," it said.
'Potential to Erode Trust'
The authority's announcement stated: "Our probe concluded that the film's failure to disclose that the voice's father held a post in the Hamas-run government was significantly deceptive.
"This implied that the public did not have vital facts which may have been extremely pertinent to their assessment of the narrator and the content he presented.
"Credibility is at the core of the relationship between a television network and its public, notably for a state-funded media outlet such as the public broadcaster.
"This failing had the potential to erode the exceptionally strong levels of credibility that audiences would have invested in a BBC factual programme about the Israel-Gaza war."
The documentary was pulled from the online platform in February after the narrator's familial connections emerged, and in the month of July an corporation's own inquiry determined it infringed the corporation's content policies on accuracy.
A representative for the broadcaster said: "The regulator's decision is in accordance with the conclusions of the corporation's inquiry, that there was a major oversight in the documentary in relation to the BBC's Editorial Guidelines on truthfulness, which reflects Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with the authority's determination in full. We will comply with the directive as soon as the timing and language are determined."
