The public service broadcaster was found to have committed a "major breach" of industry standards by failing to disclose that the narrator of a film about Gaza was the offspring of a Hamas official, as ruled by British broadcasting authority Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has concluded that the programme was "substantially inaccurate".
The head of the BBC had already issued an apology, noting there had been "a significant failing in relation to truthfulness".
The regulator has directed the broadcaster to broadcast a prime-time statement about its decisions.
"Given this constitutes a serious breach of our code, we are directing the broadcaster to air a message of our determinations against it on BBC2 at nine o'clock in the evening, with a date to be confirmed," it said.
'Potential to Damage Credibility'
The authority's report said: "Our probe concluded that the film's lack of disclosure that the presenter's male guardian served in a position in the Hamas-run authority was significantly deceptive.
"It meant that the public did not have essential details which may have been extremely pertinent to their judgment of the presenter and the information he presented.
"Trust is at the heart of the connection between a media organization and its public, particularly for a state-funded media outlet such as the public broadcaster.
"This oversight had the potential to undermine the exceptionally strong amounts of trust that viewers would have put in a BBC factual programme about the Israel-Gaza war."
The documentary was withdrawn from the online platform in last February after the presenter's familial connections came to light, and in the month of July an corporation's own inquiry concluded it infringed the corporation's content policies on truthfulness.
A BBC spokesperson commented: "The Ofcom ruling is in agreement with the results of the corporation's inquiry, that there was a major oversight in the film in relation to the BBC's Editorial Guidelines on accuracy, which corresponds to clause 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we agree with Ofcom's decision in complete. We will adhere to the penalty as soon as the date and wording are determined."
