The BBC was found to have committed a "serious breach" of broadcasting rules by omitting to mention that the narrator of a documentary about the Gaza situation was the child of a Hamas representative, as ruled by regulatory body Ofcom.
An inquiry by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The chief executive of the broadcaster had already issued an apology, stating there had been "a major oversight in relation to truthfulness".
Ofcom has instructed the BBC to air a evening declaration about its findings.
"Given this constitutes a serious breach of our regulations, we are ordering the BBC to transmit a statement of our determinations against it on BBC Two at 21:00, with a timing to be determined," the regulator stated.
'Potential to Erode Credibility'
The authority's statement declared: "The inquiry we conducted determined that the film's omission to reveal that the voice's parent held a position in the Hamas-run government was materially misleading.
"Consequently that the viewers did not have critical information which may have been highly relevant to their judgment of the presenter and the details he provided.
"Trust is at the core of the bond between a broadcaster and its viewers, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the risk to damage the very considerable degrees of trust that audiences would have invested in a documentary produced by the BBC about the Gaza conflict."
The programme was pulled from the online platform in the month of February after the boy's personal associations were revealed, and in this past July an corporation's own inquiry found it infringed the organization's editorial guidelines on accuracy.
A BBC spokesperson said: "The regulator's decision is in line with the results of the internal assessment, that there was a major oversight in the documentary in relation to the broadcaster's journalistic policies on truthfulness, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we agree with the authority's determination in full. We will follow the sanction as soon as the schedule and language are confirmed."
