The public service broadcaster was found to have committed a "serious breach" of broadcasting rules by failing to disclose that the presenter of a documentary about the Gaza conflict was the son of a Hamas representative, according to UK media regulator Ofcom.
An inquiry 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, saying there had been "a major oversight in relation to truthfulness".
The regulator has directed the corporation to air a evening statement about its decisions.
"As this represents a major infringement of our rules, we are directing the broadcaster to air a statement of our conclusions against it on the BBC's second channel at nine o'clock in the evening, with a schedule to be finalised," it said.
'Risk to Erode Trust'
The authority's announcement said: "The inquiry we conducted determined that the documentary's lack of disclosure that the presenter's male guardian held a position in the Hamas-controlled authority was materially misleading.
"Consequently that the audience did not have vital facts which may have been very significant to their assessment of the voice and the details he provided.
"Confidence is at the core of the bond between a broadcaster and its audience, especially for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the potential to undermine the significantly high levels of confidence that viewers would have put in a BBC factual programme about the Gaza conflict."
The documentary was removed from the online platform in last February after the narrator's personal associations emerged, and in this past July an internal BBC review found it infringed the organization's content policies on factual correctness.
A BBC spokesperson said: "The authority's determination is in accordance with the findings of the corporation's inquiry, that there was a serious error in the film in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we agree with the regulator's ruling in complete. We will follow the directive as soon as the schedule and wording are confirmed."
