The public service broadcaster engaged in a "significant breach" of broadcasting rules by not revealing that the presenter of a programme about Gaza was the son of a Hamas official, according to regulatory body 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 head of the BBC had previously apologised, noting there had been "a serious error in relation to truthfulness".
The authority has instructed the broadcaster to broadcast a evening declaration about its decisions.
"As this represents a serious breach of our code, we are ordering the BBC to broadcast a message of our conclusions against it on BBC Two at 21:00, with a timing to be finalised," the regulator stated.
'Possibility to Erode Confidence'
The watchdog's report declared: "Our investigation concluded that the film's omission to reveal that the narrator's father held a post in the Hamas-controlled administration was significantly deceptive.
"This implied that the public did not have critical information which may have been highly relevant to their assessment of the narrator and the details he provided.
"Trust is at the core of the relationship between a television network and its public, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the potential to undermine the significantly high levels of credibility that audiences would have invested in a BBC factual programme about the Israel-Gaza war."
The programme was removed from the online platform in the month of February after the boy's familial connections were revealed, and in this past July an broadcaster's internal assessment concluded it breached the corporation's journalistic standards on factual correctness.
A corporation official said: "The authority's determination is in agreement with the results of the internal assessment, that there was a significant failing in the documentary in relation to the BBC's Editorial Guidelines on truthfulness, which aligns with Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we agree with Ofcom's decision in complete. We will adhere to the sanction as soon as the schedule and wording are finalised."
