The British broadcaster was found to have committed a "major breach" of broadcasting rules by failing to disclose that the voice of a documentary about Gaza was the child of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has found that the documentary was "significantly deceptive".
The head of the BBC had already issued an apology, stating there had been "a serious error in relation to accuracy".
Ofcom has instructed the corporation to air a prime-time statement 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 the BBC's second channel at 9pm, with a timing to be confirmed," the statement read.
'Risk to Undermine Confidence'
The authority's announcement stated: "The inquiry we conducted found that the programme's omission to reveal that the presenter's male guardian served in a position in the Hamas-administered authority was substantially inaccurate.
"Consequently that the viewers did not have essential details which may have been highly relevant to their judgment of the presenter and the details he provided.
"Credibility is at the center of the bond between a broadcaster and its audience, particularly for a state-funded media outlet such as the BBC.
"This oversight had the possibility to undermine the very considerable degrees of trust that audiences would have placed in a BBC factual programme about the Israel-Gaza war."
The programme was withdrawn from the online platform in last February after the boy's personal associations were revealed, and in this past July an corporation's own inquiry found it breached the broadcaster's content policies on factual correctness.
A representative for the broadcaster stated: "The authority's determination is in agreement with the conclusions of Peter Johnston's review, that there was a significant failing in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to regulation 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we comply with the regulator's ruling in complete. We will follow the sanction as soon as the timing and wording are finalised."
