The public service broadcaster committed a "serious breach" of broadcasting rules by not revealing that the voice of a documentary about the Gaza conflict was the son of a Hamas administrator, as ruled by regulatory body Ofcom.
An probe by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, noting there had been "a major oversight in relation to accuracy".
The regulator has instructed the corporation to broadcast a peak-time statement about its decisions.
"As this represents a serious breach of our code, we are ordering the broadcaster to air a statement of our determinations against it on the BBC's second channel at 21:00, with a date to be finalised," it said.
'Risk to Undermine Trust'
The watchdog's statement stated: "Our investigation found that the film's failure to disclose that the presenter's male guardian served in a role in the Hamas-administered authority was significantly deceptive.
"Consequently that the audience did not have critical information which may have been extremely pertinent to their evaluation of the voice and the content he provided.
"Trust is at the center of the connection between a television network and its audience, notably for a national broadcasting corporation such as the public broadcaster.
"This failing had the possibility to erode the very considerable degrees of credibility that audiences would have placed in a factual film from the broadcaster about the Israel-Gaza war."
The documentary was removed from the online platform in the month of February after the boy's personal associations came to light, and in July an corporation's own inquiry found it infringed the broadcaster's content policies on accuracy.
A BBC spokesperson commented: "The Ofcom ruling is in line with the results of Peter Johnston's review, that there was a significant failing in the documentary in relation to the broadcaster's journalistic policies on accuracy, which aligns with Rule 2.2 of the regulator's media standards.
"We issued an apology for this and we agree with Ofcom's decision in complete. We will follow the penalty as soon as the timing and wording are finalised."