The British broadcaster was found to have committed a "serious breach" of broadcasting rules by not revealing that the presenter of a film about the Gaza conflict was the child of a Hamas representative, as ruled by UK media regulator Ofcom.
An probe by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has concluded that the programme was "substantially inaccurate".
The BBC's director general had previously apologised, stating there had been "a significant failing in relation to truthfulness".
The authority has instructed the BBC to transmit a peak-time announcement about its conclusions.
"Given this constitutes a serious breach of our code, we are instructing the corporation to transmit a statement of our determinations against it on BBC Two at 21:00, with a schedule to be determined," the statement read.
'Potential to Undermine Confidence'
The authority's statement stated: "The inquiry we conducted determined that the programme's failure to disclose that the narrator's parent held a post in the Hamas-controlled authority was significantly deceptive.
"This implied that the audience did not have essential details which may have been highly relevant to their assessment of the voice and the information he presented.
"Trust is at the core of the relationship between a broadcaster and its viewers, notably for a national broadcasting corporation such as the British Broadcasting Corporation.
"This oversight had the potential to damage the very considerable amounts of confidence that the public would have placed in a factual film from the broadcaster about the Gaza conflict."
The programme was removed from the online platform in last February after the presenter's familial connections emerged, and in July an internal BBC review concluded it breached the corporation's content policies on accuracy.
A representative for the broadcaster commented: "The Ofcom ruling 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 accuracy, which reflects regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we accept Ofcom's decision in full. We will follow the directive as soon as the schedule and wording are determined."
