The public service broadcaster was found to have committed a "major breach" of industry standards by omitting to mention that the presenter of a documentary about the Gaza situation was the son of a Hamas administrator, as determined by British broadcasting authority Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the film was "substantially inaccurate".
The BBC's director general had earlier expressed regret, saying there had been "a serious error in relation to truthfulness".
Ofcom has directed the corporation to broadcast a evening declaration about its findings.
"As this represents a major infringement of our rules, we are instructing the BBC to broadcast a statement of our findings against it on BBC Two at 21:00, with a schedule to be confirmed," the statement read.
'Potential to Undermine Credibility'
The regulator's announcement stated: "Our investigation found that the film's omission to reveal that the narrator's father held a post in the Hamas-controlled administration was materially misleading.
"This implied that the public did not have vital facts which may have been very significant to their judgment of the narrator and the information he presented.
"Credibility is at the heart of the bond between a television network and its public, especially for a national broadcasting corporation such as the British Broadcasting Corporation.
"This failing had the risk to erode the exceptionally strong degrees of confidence that viewers would have invested in a documentary produced by the BBC about the conflict in Gaza."
The documentary was pulled from the online platform in last February after the boy's personal associations were revealed, and in the month of July an broadcaster's internal assessment determined it breached the corporation's journalistic standards on truthfulness.
A BBC spokesperson commented: "The Ofcom ruling is in agreement with the findings of the corporation's inquiry, that there was a major oversight in the programme in relation to the corporation's content standards on truthfulness, which reflects Rule 2.2 of the regulator's media standards.
"We issued an apology for this and we comply with the regulator's ruling in full. We will adhere to the directive as soon as the timing and wording are finalised."
