The public service broadcaster was found to have committed a "serious breach" of broadcasting rules by failing to disclose that the voice of a programme about the Gaza conflict was the offspring of a Hamas administrator, as determined by British broadcasting authority Ofcom.
An inquiry by the media regulator into Gaza: How to Survive a Warzone has found that the film was "substantially inaccurate".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a significant failing in relation to accuracy".
The authority has ordered the broadcaster to transmit a evening statement about its decisions.
"Since this amounts to a major infringement of our regulations, we are ordering the broadcaster to broadcast a announcement of our determinations against it on BBC Two at 21:00, with a date to be finalised," the statement read.
'Potential to Erode Confidence'
The authority's announcement declared: "The inquiry we conducted found that the programme's omission to reveal that the presenter's parent served in a role in the Hamas-run authority was materially misleading.
"Consequently that the public did not have vital facts which may have been very significant to their evaluation of the presenter and the details he provided.
"Trust is at the core of the relationship between a television network and its audience, especially for a state-funded media outlet such as the British Broadcasting Corporation.
"This failing had the potential to damage the significantly high levels of confidence that the public would have put in a factual film from the broadcaster about the Gaza conflict."
The film was withdrawn from the BBC's streaming service in last February after the presenter's personal associations emerged, and in this past July an corporation's own inquiry found it infringed the corporation's content policies on factual correctness.
A representative for the broadcaster said: "The Ofcom ruling is in accordance with the results of Peter Johnston's review, that there was a serious error in the documentary in relation to the corporation's content standards on accuracy, which aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we accept Ofcom's decision in its entirety. We will adhere to the sanction as soon as the schedule and wording are determined."
