The British broadcaster engaged in a "serious breach" of industry standards by omitting to mention that the voice of a film about Gaza was the son of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An probe by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the documentary was "substantially inaccurate".
The head of the BBC had previously apologised, saying there had been "a serious error in relation to factual correctness".
Ofcom has directed the broadcaster to transmit a evening statement about its decisions.
"As this represents a major infringement of our regulations, we are directing the BBC to broadcast a announcement of our findings against it on the BBC's second channel at 21:00, with a timing to be finalised," it said.
'Potential to Undermine Trust'
The authority's statement declared: "Our probe found that the documentary's failure to disclose that the voice's parent occupied a post in the Hamas-administered administration was substantially inaccurate.
"It meant that the audience did not have essential details which may have been very significant to their judgment of the voice and the details he presented.
"Confidence is at the center of the relationship between a television network and its viewers, notably for a state-funded media outlet such as the BBC.
"This oversight had the risk to erode the significantly high levels of confidence that the public would have put in a BBC factual programme about the Israel-Gaza war."
The programme was withdrawn from iPlayer in the month of February after the boy's familial connections emerged, and in July an broadcaster's internal assessment determined it violated the corporation's editorial guidelines on accuracy.
A corporation official commented: "The regulator's decision is in accordance with the results of the corporation's inquiry, that there was a serious error in the documentary in relation to the corporation's content standards on factual correctness, which aligns with clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept Ofcom's decision in its entirety. We will adhere to the penalty as soon as the timing and language are confirmed."
