The public service broadcaster committed a "serious breach" of broadcasting rules by omitting to mention that the voice of a programme about Gaza was the offspring of a Hamas administrator, according to British broadcasting authority Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the film was "substantially inaccurate".
The head of the BBC had earlier expressed regret, noting there had been "a serious error in relation to truthfulness".
The authority has ordered the broadcaster to transmit a evening announcement about its decisions.
"Since this amounts to a serious breach of our regulations, we are ordering the broadcaster to transmit a announcement of our determinations against it on the BBC's second channel at 9pm, with a schedule to be confirmed," the statement read.
'Potential to Undermine Trust'
The regulator's announcement said: "The inquiry we conducted determined that the programme's failure to disclose that the presenter's male guardian occupied a role in the Hamas-controlled administration was substantially inaccurate.
"This implied that the public did not have essential details which may have been extremely pertinent to their assessment of the presenter and the content he provided.
"Credibility is at the core of the bond between a broadcaster and its public, notably for a state-funded media outlet such as the BBC.
"This error had the risk to erode the very considerable amounts of credibility that viewers would have put in a BBC factual programme about the Israel-Gaza war."
The film was pulled from iPlayer in the month of February after the narrator's personal associations emerged, and in this past July an corporation's own inquiry concluded it violated the broadcaster's journalistic standards on accuracy.
A BBC spokesperson commented: "The authority's determination is in line 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 factual correctness, which aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we accept Ofcom's decision in complete. We will adhere to the sanction as soon as the schedule and language are determined."
