The public service broadcaster committed a "significant breach" of media regulations by omitting to mention that the presenter of a programme about the Gaza situation was the offspring of a Hamas representative, as determined by British broadcasting authority Ofcom.
An investigation by Ofcom into Gaza: How to Survive a Warzone has determined that the programme was "materially misleading".
The BBC's director general had previously apologised, stating there had been "a serious error in relation to factual correctness".
The regulator has instructed the corporation to broadcast a peak-time statement about its decisions.
"Since this amounts to a significant violation of our code, we are directing the BBC to air a statement of our determinations against it on BBC Two at 21:00, with a date to be confirmed," the statement read.
'Possibility to Undermine Trust'
The authority's announcement stated: "Our investigation found that the documentary's failure to disclose that the voice's father held a post in the Hamas-administered authority was substantially inaccurate.
"Consequently that the public did not have critical information which may have been very significant to their assessment of the narrator and the content he provided.
"Confidence is at the center of the relationship between a broadcaster and its public, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This error had the possibility to erode the exceptionally strong amounts of confidence that the public would have put in a documentary produced by the BBC about the Israel-Gaza war."
The film was removed from the online platform in the month of February after the narrator's family links emerged, and in the month of July an corporation's own inquiry found it breached the organization's journalistic standards on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in accordance with the results of Peter Johnston's review, that there was a major oversight in the film in relation to the BBC's Editorial Guidelines on truthfulness, which reflects Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with the regulator's ruling in its entirety. We will adhere to the sanction as soon as the schedule and wording are confirmed."
