The British broadcaster was found to have committed a "major breach" of broadcasting rules by omitting to mention that the presenter of a programme about the Gaza conflict was the child of a Hamas representative, as determined by regulatory body Ofcom.
An probe by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The BBC's director general had already issued an apology, noting there had been "a serious error in relation to accuracy".
The authority has ordered the broadcaster to air a prime-time statement about its findings.
"As this represents a serious breach of our code, we are directing the broadcaster to transmit a announcement of our determinations against it on BBC2 at nine o'clock in the evening, with a schedule to be finalised," the statement read.
'Risk to Undermine Trust'
The regulator's announcement said: "Our investigation found that the documentary's failure to disclose that the voice's male guardian occupied a position in the Hamas-administered authority was significantly deceptive.
"It meant that the viewers did not have vital facts which may have been very significant to their evaluation of the presenter and the content he shared.
"Confidence is at the heart of the relationship between a broadcaster and its viewers, particularly for a state-funded media outlet such as the public broadcaster.
"This error had the potential to damage the exceptionally strong amounts of trust that audiences would have invested in a factual film from the broadcaster about the Gaza conflict."
The documentary was withdrawn from the online platform in the month of February after the presenter's family links emerged, and in this past July an broadcaster's internal assessment found it breached the broadcaster's journalistic standards on truthfulness.
A corporation official said: "The Ofcom ruling is in agreement with the conclusions of the corporation's inquiry, that there was a significant failing in the programme in relation to the corporation's content standards on factual correctness, which corresponds to regulation 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with the regulator's ruling in its entirety. We will follow the sanction as soon as the schedule and wording are determined."
