The public service broadcaster committed a "significant breach" of media regulations by not revealing that the presenter of a documentary about the Gaza situation was the son of a Hamas representative, according to regulatory body Ofcom.
An inquiry by the media regulator into Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, noting there had been "a significant failing in relation to truthfulness".
The authority has ordered the corporation to broadcast a evening announcement about its decisions.
"As this represents a serious breach of our regulations, we are directing the BBC to broadcast a announcement of our findings against it on BBC Two at nine o'clock in the evening, with a timing to be determined," the regulator stated.
'Potential to Damage Trust'
The regulator's report stated: "Our investigation determined that the documentary's omission to reveal that the presenter's parent held a post in the Hamas-controlled administration was materially misleading.
"Consequently that the audience did not have critical information which may have been very significant to their assessment of the presenter and the information he presented.
"Trust is at the center of the relationship between a media organization and its viewers, especially for a state-funded media outlet such as the BBC.
"This oversight had the risk to undermine the exceptionally strong amounts of confidence that viewers would have placed in a BBC factual programme about the Gaza conflict."
The film was pulled from iPlayer in February after the boy's family links came to light, and in this past July an broadcaster's internal assessment concluded it violated the organization's editorial guidelines on factual correctness.
A corporation official stated: "The Ofcom ruling is in accordance with the results of the internal assessment, that there was a serious error in the film in relation to the corporation's content standards on truthfulness, which aligns with Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we accept the regulator's ruling in full. We will follow the penalty as soon as the date and wording are determined."
