The BBC was found to have committed a "serious breach" of industry standards by omitting to mention that the voice of a film about Gaza was the son of a Hamas official, as ruled by British broadcasting authority Ofcom.
An inquiry by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The BBC's director general had earlier expressed regret, stating there had been "a major oversight in relation to truthfulness".
The authority has instructed the corporation to broadcast a peak-time statement about its findings.
"As this represents a serious breach of our code, we are ordering the corporation to broadcast a statement of our findings against it on BBC2 at 9pm, with a timing to be finalised," it said.
'Possibility to Erode Trust'
The authority's report declared: "Our investigation found that the documentary's omission to reveal that the voice's parent served in a position in the Hamas-administered government was significantly deceptive.
"Consequently that the viewers did not have critical information which may have been extremely pertinent to their evaluation of the narrator and the details he presented.
"Confidence is at the center of the bond between a television network and its public, especially for a national broadcasting corporation such as the public broadcaster.
"This failing had the risk to undermine the significantly high degrees of credibility that audiences would have put in a BBC factual programme about the conflict in Gaza."
The documentary was pulled from the online platform in the month of February after the boy's family links were revealed, and in the month of July an internal BBC review determined it violated the broadcaster's editorial guidelines on factual correctness.
A corporation official commented: "The Ofcom ruling is in line with the conclusions of the corporation's inquiry, that there was a serious error in the programme in relation to the corporation's content standards on truthfulness, which reflects regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we agree with Ofcom's decision in full. We will adhere to the directive as soon as the timing and wording are finalised."
