The public service broadcaster engaged in a "serious breach" of industry standards by omitting to mention that the presenter of a film about Gaza was the child of a Hamas administrator, according to British broadcasting authority Ofcom.
An investigation by the media regulator into Gaza: How to Survive a Warzone has concluded that the film was "materially misleading".
The BBC's director general had already issued an apology, stating there had been "a major oversight in relation to accuracy".
The authority has ordered the corporation to air a peak-time statement about its findings.
"Since this amounts to a significant violation of our rules, we are ordering the corporation to transmit a statement of our conclusions against it on BBC Two at 21:00, with a date to be finalised," the regulator stated.
'Risk to Damage Confidence'
The regulator's announcement declared: "Our investigation determined that the documentary's omission to reveal that the narrator's parent held a position in the Hamas-administered administration was substantially inaccurate.
"It meant that the public did not have vital facts which may have been very significant to their assessment of the voice and the information he shared.
"Confidence is at the heart of the relationship between a media organization and its audience, especially for a public service broadcaster such as the BBC.
"This failing had the risk to damage the exceptionally strong levels of confidence that viewers would have put in a BBC factual programme about the Gaza conflict."
The programme was pulled from the online platform in February after the boy's personal associations came to light, and in July an broadcaster's internal assessment found it infringed the organization's journalistic standards on factual correctness.
A representative for the broadcaster said: "The authority's determination is in line with the conclusions of the internal assessment, that there was a major oversight in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to clause 2.2 of the regulator's media standards.
"We issued an apology for this and we comply with Ofcom's decision in complete. We will comply with the penalty as soon as the date and wording are finalised."
