The public service broadcaster committed a "major breach" of industry standards by omitting to mention that the voice of a film about the Gaza situation was the child of a Hamas representative, as ruled by UK media regulator Ofcom.
An probe by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "significantly deceptive".
The chief executive of the broadcaster had already issued an apology, noting there had been "a serious error in relation to accuracy".
The regulator has instructed the broadcaster to broadcast a evening statement about its conclusions.
"Given this constitutes a serious breach of our rules, we are directing the corporation to transmit a statement of our determinations against it on the BBC's second channel at nine o'clock in the evening, with a schedule to be confirmed," the statement read.
'Risk to Damage Trust'
The authority's statement said: "Our investigation determined that the film's omission to reveal that the voice's male guardian served in a role in the Hamas-administered government was substantially inaccurate.
"This implied that the audience did not have vital facts which may have been highly relevant to their assessment of the voice and the details he presented.
"Confidence is at the center of the relationship between a broadcaster and its public, notably for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the risk to erode the exceptionally strong levels of confidence that audiences would have invested in a documentary produced by the BBC about the Gaza conflict."
The documentary was pulled from the online platform in February after the boy's personal associations came to light, and in the month of July an corporation's own inquiry found it violated the corporation's content policies on truthfulness.
A representative for the broadcaster commented: "The Ofcom ruling is in line with the findings of the corporation's inquiry, that there was a major oversight in the programme in relation to the BBC's Editorial Guidelines on truthfulness, which aligns with Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept the authority's determination in full. We will comply with the penalty as soon as the timing and language are confirmed."
