The BBC was found to have committed a "serious breach" of broadcasting rules by omitting to mention that the presenter of a film about the Gaza situation was the child of a Hamas official, as determined by regulatory body Ofcom.
An inquiry by the broadcasting watchdog into Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The head of the BBC had previously apologised, saying there had been "a significant failing in relation to truthfulness".
The regulator has directed the BBC to broadcast a peak-time statement about its conclusions.
"Since this amounts to a major infringement of our code, we are instructing the corporation to transmit a statement of our determinations against it on BBC2 at nine o'clock in the evening, with a timing to be finalised," it said.
'Potential to Damage Credibility'
The regulator's statement declared: "Our probe determined that the programme's lack of disclosure that the voice's father held a role in the Hamas-run authority was materially misleading.
"This implied that the public did not have vital facts which may have been highly relevant to their assessment of the voice and the content he shared.
"Credibility is at the heart of the bond between a television network and its audience, notably for a state-funded media outlet such as the BBC.
"This error had the potential to erode the significantly high degrees of confidence that audiences would have invested in a documentary produced by the BBC about the conflict in Gaza."
The documentary was pulled from iPlayer in the month of February after the boy's personal associations were revealed, and in the month of July an corporation's own inquiry found it violated the corporation's editorial guidelines on accuracy.
A representative for the broadcaster commented: "The Ofcom ruling is in accordance with the findings of the internal assessment, that there was a major oversight in the film in relation to the broadcaster's journalistic policies on accuracy, which reflects clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we comply with the regulator's ruling in its entirety. We will comply with the sanction as soon as the timing and wording are determined."
