The public service broadcaster engaged in a "major breach" of industry standards by omitting to mention that the voice of a documentary about the Gaza situation was the child of a Hamas official, according to British broadcasting authority Ofcom.
An probe by the broadcasting watchdog into Gaza: How to Survive a Warzone has determined that the film was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, noting there had been "a significant failing in relation to truthfulness".
The regulator has directed the broadcaster to broadcast a evening statement about its findings.
"As this represents a significant violation of our code, we are instructing the corporation to air a announcement of our determinations against it on BBC Two at 21:00, with a schedule to be finalised," it said.
'Potential to Damage Trust'
The regulator's announcement said: "The inquiry we conducted concluded that the documentary's failure to disclose that the presenter's father served in a role in the Hamas-administered authority was significantly deceptive.
"This implied that the public did not have critical information which may have been extremely pertinent to their assessment of the narrator and the details he provided.
"Confidence is at the heart of the relationship between a media organization and its public, particularly for a public service broadcaster such as the BBC.
"This oversight had the risk to undermine the significantly high amounts of confidence that the public would have placed in a BBC factual programme about the Gaza conflict."
The documentary was withdrawn from iPlayer in the month of February after the presenter's familial connections were revealed, and in the month of July an broadcaster's internal assessment concluded it breached the corporation's content policies on truthfulness.
A corporation official stated: "The authority's determination is in accordance with the conclusions of the corporation's inquiry, that there was a significant failing in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with the authority's determination in full. We will follow the directive as soon as the schedule and wording are confirmed."
