The BBC was found to have committed a "serious breach" of industry standards by omitting to mention that the presenter of a programme about the Gaza conflict was the offspring of a Hamas official, as ruled by regulatory body Ofcom.
An probe by the media regulator into the programme Gaza: How to Survive a Warzone has concluded that the programme was "substantially inaccurate".
The BBC's director general had earlier expressed regret, noting there had been "a major oversight in relation to truthfulness".
The authority has ordered the broadcaster to air a peak-time declaration about its findings.
"Given this constitutes a significant violation of our rules, we are instructing the broadcaster to transmit a statement of our findings against it on BBC Two at nine o'clock in the evening, with a date to be determined," the statement read.
'Potential to Undermine Confidence'
The regulator's statement declared: "The inquiry we conducted found that the programme's omission to reveal that the voice's parent held a post in the Hamas-administered government was materially misleading.
"This implied that the public did not have essential details which may have been very significant to their evaluation of the voice and the details he shared.
"Trust is at the center of the bond between a broadcaster and its public, especially for a public service broadcaster such as the BBC.
"This failing had the possibility to undermine the very considerable levels of trust that audiences would have invested in a BBC factual programme about the Israel-Gaza war."
The film was withdrawn from the online platform in last February after the boy's personal associations came to light, and in the month of July an broadcaster's internal assessment concluded it breached the organization's journalistic standards on accuracy.
A representative for the broadcaster said: "The authority's determination is in line with the results of the internal assessment, that there was a serious error in the programme in relation to the corporation's content standards on truthfulness, which corresponds to regulation 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we comply with the authority's determination in full. We will follow the directive as soon as the timing and language are finalised."
