The public service broadcaster committed a "major breach" of broadcasting rules by not revealing that the presenter of a programme about the Gaza situation was the offspring of a Hamas official, according to regulatory body Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary 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 ordered the BBC to transmit a evening declaration about its decisions.
"As this represents a significant violation of our code, we are ordering the BBC to broadcast a message of our conclusions against it on BBC Two at nine o'clock in the evening, with a date to be confirmed," the regulator stated.
'Risk to Erode Credibility'
The regulator's report declared: "Our investigation determined that the film's failure to disclose that the presenter's male guardian served in a position in the Hamas-administered authority was materially misleading.
"Consequently that the viewers did not have vital facts which may have been extremely pertinent to their assessment of the narrator and the details he provided.
"Trust is at the heart of the bond between a television network and its viewers, notably for a public service broadcaster such as the public broadcaster.
"This oversight had the possibility to damage the very considerable levels of credibility that audiences would have placed in a documentary produced by the BBC about the conflict in Gaza."
The documentary was removed from the BBC's streaming service in February after the presenter's personal associations emerged, and in this past July an corporation's own inquiry concluded it infringed the broadcaster's editorial guidelines on truthfulness.
A corporation official commented: "The authority's determination is in line with the results of the corporation's inquiry, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on truthfulness, which aligns with regulation 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we comply with the regulator's ruling in full. We will adhere to the sanction as soon as the timing and wording are finalised."
