The public service broadcaster engaged in a "serious breach" of media regulations by failing to disclose that the presenter of a film about the Gaza situation was the child of a Hamas official, as ruled by UK media regulator Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has found that the film was "substantially inaccurate".
The BBC's director general had earlier expressed regret, noting there had been "a serious error in relation to factual correctness".
The regulator has instructed the corporation to transmit a peak-time statement about its findings.
"Given this constitutes a serious breach of our regulations, we are instructing the corporation to air a announcement of our determinations against it on BBC Two at 21:00, with a schedule to be confirmed," the regulator stated.
'Risk to Undermine Confidence'
The authority's statement stated: "The inquiry we conducted found that the programme's lack of disclosure that the presenter's father occupied a position in the Hamas-controlled administration was substantially inaccurate.
"It meant that the viewers did not have essential details which may have been extremely pertinent to their assessment of the presenter and the details he presented.
"Trust is at the core of the bond between a broadcaster and its audience, especially for a state-funded media outlet such as the BBC.
"This failing had the possibility to undermine the significantly high levels of credibility that audiences would have put in a BBC factual programme about the Gaza conflict."
The film was withdrawn from the BBC's streaming service in February after the presenter's personal associations were revealed, and in the month of July an internal BBC review determined it violated the organization's journalistic standards on truthfulness.
A representative for the broadcaster stated: "The regulator's decision is in accordance with the conclusions of the corporation's inquiry, that there was a significant failing in the documentary in relation to the broadcaster's journalistic policies on truthfulness, which reflects regulation 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept the regulator's ruling in full. We will adhere to the directive as soon as the date and wording are determined."
