The public service broadcaster committed a "major breach" of industry standards by not revealing that the presenter of a programme about the Gaza situation was the child of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The chief executive of the broadcaster had already issued an apology, noting there had been "a serious error in relation to factual correctness".
Ofcom has directed the BBC to broadcast a evening declaration about its conclusions.
"Given this constitutes a major infringement of our code, we are ordering the corporation to broadcast a message of our findings against it on the BBC's second channel at nine o'clock in the evening, with a timing to be determined," the statement read.
'Possibility to Undermine Trust'
The authority's report stated: "Our investigation concluded that the film's failure to disclose that the narrator's father occupied a role in the Hamas-controlled government was substantially inaccurate.
"It meant that the viewers did not have essential details which may have been extremely pertinent to their assessment of the narrator and the information he shared.
"Confidence is at the center of the relationship between a media organization and its public, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This oversight had the risk to damage the exceptionally strong degrees of credibility that audiences would have put in a documentary produced by the BBC about the Israel-Gaza war."
The film was removed from the BBC's streaming service in February after the presenter's personal associations came to light, and in the month of July an broadcaster's internal assessment determined it breached the corporation's editorial guidelines on accuracy.
A representative for the broadcaster commented: "The Ofcom ruling is in line with the findings of the corporation's inquiry, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on factual correctness, which corresponds to Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we comply with the authority's determination in its entirety. We will adhere to the penalty as soon as the date and wording are finalised."
