The British broadcaster committed a "significant breach" of industry standards by failing to disclose that the narrator of a film about Gaza was the offspring of a Hamas representative, as ruled by regulatory body Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, saying there had been "a serious error in relation to truthfulness".
The regulator has directed the corporation to transmit a evening statement about its findings.
"As this represents a major infringement of our regulations, we are directing the broadcaster to broadcast a message of our conclusions against it on BBC2 at nine o'clock in the evening, with a date to be finalised," the statement read.
'Possibility to Erode Trust'
The watchdog's announcement declared: "Our investigation concluded that the documentary's lack of disclosure that the voice's male guardian served in a role in the Hamas-run authority was significantly deceptive.
"It meant that the audience did not have vital facts which may have been highly relevant to their evaluation of the presenter and the information he presented.
"Trust is at the core of the connection between a broadcaster and its viewers, particularly for a national broadcasting corporation such as the British Broadcasting Corporation.
"This oversight had the risk to erode the exceptionally strong amounts of credibility that viewers would have placed in a factual film from the broadcaster about the Gaza conflict."
The film was withdrawn from iPlayer in the month of February after the narrator's personal associations emerged, and in the month of July an internal BBC review determined it breached the organization's journalistic standards on factual correctness.
A corporation official said: "The authority's determination is in line with the results of Peter Johnston's review, that there was a major oversight in the programme in relation to the broadcaster's journalistic policies on factual correctness, which corresponds to Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we comply with Ofcom's decision in full. We will adhere to the directive as soon as the timing and wording are confirmed."
