The British broadcaster was found to have committed a "major breach" of broadcasting rules by failing to disclose that the narrator of a documentary about the Gaza conflict was the son of a Hamas administrator, according to regulatory body Ofcom.
An investigation by Ofcom into Gaza: How to Survive a Warzone has found that the film was "materially misleading".
The BBC's director general had previously apologised, saying there had been "a major oversight in relation to factual correctness".
The authority has ordered the BBC to air a peak-time declaration about its conclusions.
"Given this constitutes a serious breach of our code, we are ordering the BBC to broadcast a statement of our findings against it on BBC2 at nine o'clock in the evening, with a schedule to be confirmed," the regulator stated.
'Possibility to Undermine Trust'
The authority's report stated: "Our probe concluded that the documentary's failure to disclose that the voice's parent served in a position in the Hamas-run administration was significantly deceptive.
"It meant that the audience did not have critical information which may have been extremely pertinent to their evaluation of the narrator and the information he shared.
"Trust is at the center of the bond between a television network and its viewers, notably for a state-funded media outlet such as the BBC.
"This failing had the potential to erode the significantly high degrees of trust that the public would have invested in a documentary produced by the BBC about the conflict in Gaza."
The film was pulled from the online platform in the month of February after the narrator's personal associations came to light, and in this past July an broadcaster's internal assessment found it infringed the broadcaster's editorial guidelines on factual correctness.
A representative for the broadcaster said: "The authority's determination is in line with the results of the internal assessment, that there was a major oversight in the programme in relation to the broadcaster's journalistic policies on truthfulness, which reflects Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept the regulator's ruling in its entirety. We will follow the sanction as soon as the timing and language are determined."
