The British broadcaster was found to have committed a "serious breach" of media regulations by not revealing that the voice of a programme about the Gaza conflict was the offspring of a Hamas administrator, as ruled by 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 earlier expressed regret, stating there had been "a serious error in relation to factual correctness".
Ofcom has instructed the broadcaster to air a prime-time statement about its decisions.
"Given this constitutes a major infringement of our rules, we are instructing the corporation to air a announcement of our determinations against it on BBC Two at nine o'clock in the evening, with a date to be confirmed," the regulator stated.
'Risk to Erode Trust'
The authority's announcement declared: "Our investigation concluded that the programme's failure to disclose that the presenter's male guardian held a position in the Hamas-administered administration was materially misleading.
"It meant that the audience did not have critical information which may have been highly relevant to their assessment of the voice and the content he shared.
"Trust is at the heart of the bond between a media organization and its viewers, especially for a national broadcasting corporation such as the public broadcaster.
"This oversight had the possibility to undermine the very considerable amounts of trust that viewers would have placed in a factual film from the broadcaster about the Israel-Gaza war."
The film was removed from the online platform in the month of February after the narrator's personal associations emerged, and in the month of July an corporation's own inquiry found it infringed the broadcaster's journalistic standards on accuracy.
A BBC spokesperson stated: "The regulator's decision is in agreement with the conclusions of the corporation's inquiry, that there was a significant failing in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we comply with the regulator's ruling in full. We will adhere to the directive as soon as the date and wording are determined."
