The BBC was found to have committed a "significant breach" of broadcasting rules by not revealing that the voice of a film about the Gaza situation was the offspring of a Hamas official, as ruled by UK media regulator Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has determined that the documentary was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, stating there had been "a major oversight in relation to accuracy".
Ofcom has ordered the broadcaster to broadcast a evening statement about its decisions.
"Given this constitutes a serious breach of our rules, we are ordering the corporation to transmit a message of our determinations against it on the BBC's second channel at nine o'clock in the evening, with a schedule to be finalised," it said.
'Risk to Erode Confidence'
The regulator's announcement stated: "Our probe concluded that the programme's omission to reveal that the presenter's father served in a position in the Hamas-controlled administration was significantly deceptive.
"It meant that the viewers did not have vital facts which may have been extremely pertinent to their judgment of the presenter and the content he shared.
"Confidence is at the core of the relationship between a television network and its viewers, notably for a national broadcasting corporation such as the public broadcaster.
"This error had the potential to damage the significantly high levels of trust that the public would have placed in a BBC factual programme about the Israel-Gaza war."
The programme was withdrawn from the online platform in the month of February after the boy's familial connections were revealed, and in this past July an corporation's own inquiry determined it violated the broadcaster's content policies on truthfulness.
A corporation official stated: "The regulator's decision is in agreement with the conclusions of Peter Johnston's review, that there was a major oversight in the documentary in relation to the BBC's Editorial Guidelines on truthfulness, which aligns with regulation 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we accept the regulator's ruling in its entirety. We will follow the sanction as soon as the schedule and language are finalised."
