The British broadcaster committed a "serious breach" of industry standards by not revealing that the voice of a film about the Gaza situation was the child of a Hamas representative, according to regulatory body Ofcom.
An probe by the media regulator into the documentary titled Gaza: How to Survive a Warzone has determined that the programme was "materially misleading".
The head of the BBC had previously apologised, saying there had been "a significant failing in relation to accuracy".
The authority has instructed the corporation to air a prime-time declaration about its findings.
"As this represents a significant violation of our regulations, we are instructing the corporation to transmit a message of our conclusions against it on BBC2 at nine o'clock in the evening, with a date to be finalised," the statement read.
'Risk to Damage Credibility'
The authority's report stated: "Our probe concluded that the programme's omission to reveal that the voice's parent served in a role in the Hamas-administered government was significantly deceptive.
"Consequently that the public did not have essential details which may have been highly relevant to their evaluation of the voice and the information he presented.
"Trust is at the core of the connection between a television network and its viewers, particularly for a state-funded media outlet such as the public broadcaster.
"This error had the possibility to damage the significantly high degrees of confidence that the public would have put in a BBC factual programme about the Gaza conflict."
The programme was withdrawn from iPlayer in the month of February after the boy's personal associations came to light, and in this past July an broadcaster's internal assessment concluded it breached the corporation's content policies on factual correctness.
A corporation official commented: "The Ofcom ruling is in line with the findings of the corporation's inquiry, that there was a significant failing in the film in relation to the BBC's Editorial Guidelines on truthfulness, which aligns with clause 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we accept Ofcom's decision in full. We will comply with the directive as soon as the date and wording are finalised."
