The public service broadcaster was found to have committed a "significant breach" of industry standards by omitting to mention that the narrator of a programme about the Gaza conflict was the offspring of a Hamas official, according to British broadcasting authority Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the programme was "substantially inaccurate".
The BBC's director general had earlier expressed regret, saying there had been "a major oversight in relation to accuracy".
Ofcom has ordered the broadcaster to air a evening announcement about its decisions.
"As this represents a major infringement of our regulations, we are instructing the BBC to broadcast a statement of our conclusions against it on BBC Two at 9pm, with a schedule to be determined," it said.
'Potential to Damage Confidence'
The authority's report declared: "Our probe found that the documentary's lack of disclosure that the presenter's male guardian served in a position in the Hamas-run administration was significantly deceptive.
"It meant that the public did not have essential details which may have been extremely pertinent to their evaluation of the narrator and the information he shared.
"Credibility is at the heart of the connection between a broadcaster and its viewers, particularly for a public service broadcaster such as the BBC.
"This error had the possibility to undermine the very considerable amounts of trust that audiences would have placed in a documentary produced by the BBC about the conflict in Gaza."
The programme was pulled from the online platform in last February after the boy's family links emerged, and in this past July an broadcaster's internal assessment determined it violated the broadcaster's journalistic standards on truthfulness.
A corporation official said: "The authority's determination is in accordance with the results of Peter Johnston's review, that there was a serious error in the documentary in relation to the corporation's content standards on truthfulness, which aligns with regulation 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we comply with the regulator's ruling in complete. We will adhere to the sanction as soon as the timing and wording are finalised."
