The British broadcaster was found to have committed a "significant breach" of media regulations by failing to disclose that the presenter of a documentary about Gaza was the offspring of a Hamas representative, as ruled by regulatory body Ofcom.
An investigation by the broadcasting watchdog into Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a major oversight in relation to factual correctness".
Ofcom has directed the corporation to broadcast a prime-time declaration about its findings.
"Given this constitutes a major infringement of our regulations, we are directing the BBC to broadcast a statement of our determinations against it on BBC2 at 21:00, with a schedule to be finalised," it said.
'Potential to Undermine Confidence'
The authority's announcement declared: "Our probe found that the documentary's failure to disclose that the presenter's parent occupied a post in the Hamas-controlled administration was significantly deceptive.
"It meant that the viewers did not have vital facts which may have been highly relevant to their evaluation of the narrator and the content he shared.
"Trust is at the core of the connection between a broadcaster and its viewers, notably for a national broadcasting corporation such as the public broadcaster.
"This oversight had the possibility to undermine the exceptionally strong levels of confidence that the public would have placed in a factual film from the broadcaster about the conflict in Gaza."
The documentary was pulled from the BBC's streaming service in the month of February after the presenter's personal associations came to light, and in this past July an broadcaster's internal assessment concluded it infringed the organization's editorial guidelines on factual correctness.
A corporation official commented: "The Ofcom ruling is in accordance with the findings of Peter Johnston's review, that there was a significant failing in the film in relation to the corporation's content standards on accuracy, which aligns with regulation 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we agree with Ofcom's decision in its entirety. We will comply with the directive as soon as the timing and wording are determined."
