The BBC was found to have committed a "serious breach" of industry standards by not revealing that the voice of a documentary about Gaza was the offspring of a Hamas official, as determined by UK media regulator Ofcom.
An probe by the media regulator into the programme Gaza: How to Survive a Warzone has concluded that the programme was "significantly deceptive".
The head of the BBC had previously apologised, saying there had been "a significant failing in relation to factual correctness".
The regulator has directed the broadcaster to transmit a prime-time announcement about its decisions.
"Given this constitutes a serious breach of our rules, we are instructing the broadcaster to air a statement of our conclusions against it on BBC2 at 21:00, with a timing to be determined," the statement read.
'Possibility to Damage Trust'
The regulator's report said: "Our investigation found that the programme's lack of disclosure that the voice's male guardian held a post in the Hamas-run authority was significantly deceptive.
"Consequently that the viewers did not have critical information which may have been extremely pertinent to their judgment of the narrator and the information he provided.
"Confidence is at the center of the connection between a television network and its viewers, especially for a state-funded media outlet such as the public broadcaster.
"This error had the potential to damage the exceptionally strong amounts of credibility that audiences would have put in a BBC factual programme about the Gaza conflict."
The documentary was removed from the online platform in the month of February after the boy's personal associations came to light, and in July an corporation's own inquiry found it violated the corporation's content policies on accuracy.
A representative for the broadcaster commented: "The regulator's decision is in accordance with the findings of the corporation's inquiry, that there was a serious error in the film in relation to the BBC's Editorial Guidelines on truthfulness, which aligns with Rule 2.2 of the regulator's media standards.
"We issued an apology for this and we accept Ofcom's decision in full. We will follow the penalty as soon as the schedule and wording are finalised."
