The British broadcaster was found to have committed a "major breach" of broadcasting rules by not revealing that the presenter of a documentary about the Gaza conflict was the offspring of a Hamas official, as determined by UK media regulator Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The head of the BBC had earlier expressed regret, stating there had been "a significant failing in relation to accuracy".
Ofcom has instructed the corporation to transmit a evening statement about its conclusions.
"As this represents a major infringement of our regulations, we are ordering the broadcaster to transmit a announcement of our determinations against it on BBC Two at 21:00, with a date to be confirmed," it said.
'Potential to Erode Credibility'
The regulator's report declared: "Our probe concluded that the film's omission to reveal that the voice's parent served in a role in the Hamas-controlled authority was materially misleading.
"It meant that the public did not have vital facts which may have been highly relevant to their assessment of the presenter and the information he presented.
"Trust is at the center of the bond between a television network and its audience, especially for a national broadcasting corporation such as the public broadcaster.
"This error had the risk to erode the exceptionally strong degrees of credibility that the public would have put in a factual film from the broadcaster about the conflict in Gaza."
The programme was removed from the BBC's streaming service in last February after the boy's personal associations were revealed, and in July an corporation's own inquiry determined it breached the corporation's editorial guidelines on factual correctness.
A representative for the broadcaster stated: "The Ofcom ruling is in accordance with the results of the corporation's inquiry, that there was a significant failing in the documentary in relation to the corporation's content standards on factual correctness, which aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we accept the authority's determination in complete. We will adhere to the penalty as soon as the date and language are determined."
