The public service broadcaster engaged in a "serious breach" of industry standards by omitting to mention that the narrator of a documentary about the Gaza situation was the child of a Hamas official, as determined by UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the film was "substantially inaccurate".
The head of the BBC had previously apologised, saying there had been "a serious error in relation to truthfulness".
Ofcom has instructed the BBC to transmit a peak-time announcement about its conclusions.
"As this represents a significant violation of our code, we are directing the BBC to broadcast a message of our conclusions against it on the BBC's second channel at 9pm, with a schedule to be finalised," the regulator stated.
'Possibility to Damage Credibility'
The watchdog's report said: "The inquiry we conducted found that the programme's lack of disclosure that the narrator's male guardian occupied a role in the Hamas-administered government was substantially inaccurate.
"Consequently that the audience did not have vital facts which may have been very significant to their assessment of the narrator and the information he shared.
"Confidence is at the heart of the connection between a television network and its public, especially for a public service broadcaster such as the public broadcaster.
"This failing had the possibility to damage the very considerable degrees of credibility that the public would have placed in a factual film from the broadcaster about the conflict in Gaza."
The programme was pulled from the online platform in the month of February after the presenter's familial connections emerged, and in July an broadcaster's internal assessment concluded it infringed the broadcaster's content policies on truthfulness.
A BBC spokesperson commented: "The Ofcom ruling is in accordance with the findings of Peter Johnston's review, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on accuracy, which reflects regulation 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept the regulator's ruling in full. We will adhere to the sanction as soon as the schedule and wording are confirmed."
