The British broadcaster was found to have committed a "major breach" of industry standards by failing to disclose that the presenter of a film about the Gaza situation was the child of a Hamas administrator, as determined by regulatory body Ofcom.
An inquiry by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the documentary was "materially misleading".
The head of the BBC had earlier expressed regret, noting there had been "a significant failing in relation to accuracy".
The regulator has directed the BBC to air a evening declaration about its conclusions.
"As this represents a major infringement of our regulations, we are directing the BBC to broadcast a announcement of our determinations against it on the BBC's second channel at nine o'clock in the evening, with a schedule to be determined," it said.
'Potential to Erode Trust'
The watchdog's report declared: "Our investigation determined that the documentary's failure to disclose that the narrator's male guardian held a post in the Hamas-administered authority was substantially inaccurate.
"This implied that the audience did not have essential details which may have been extremely pertinent to their assessment of the presenter and the information he presented.
"Trust is at the core of the relationship between a broadcaster and its audience, particularly for a state-funded media outlet such as the BBC.
"This error had the risk to erode the very considerable levels of trust that audiences would have invested in a factual film from the broadcaster about the Israel-Gaza war."
The programme was pulled from the BBC's streaming service in the month of February after the narrator's familial connections came to light, and in the month of July an corporation's own inquiry determined it violated the broadcaster's editorial guidelines on accuracy.
A representative for the broadcaster stated: "The Ofcom ruling is in accordance with the results of the corporation's inquiry, that there was a major oversight in the programme in relation to the corporation's content standards on truthfulness, which reflects Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we agree with Ofcom's decision in full. We will follow the directive as soon as the schedule and wording are finalised."
