The British broadcaster was found to have committed a "significant breach" of industry standards by failing to disclose that the voice of a documentary about Gaza was the offspring of a Hamas official, as ruled by regulatory body Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the documentary was "substantially inaccurate".
The head of the BBC had previously apologised, saying there had been "a significant failing in relation to factual correctness".
Ofcom has instructed the corporation to air a prime-time declaration about its findings.
"Given this constitutes a major infringement of our code, we are directing the broadcaster to broadcast a message of our findings against it on BBC Two at nine o'clock in the evening, with a timing to be finalised," the regulator stated.
'Potential to Erode Trust'
The authority's announcement said: "The inquiry we conducted determined that the programme's failure to disclose that the presenter's male guardian held a post in the Hamas-administered administration was significantly deceptive.
"It meant that the audience did not have vital facts which may have been very significant to their judgment of the narrator and the information he shared.
"Confidence is at the core of the connection between a media organization and its audience, especially for a public service broadcaster such as the BBC.
"This failing had the possibility to damage the exceptionally strong degrees of credibility that the public would have placed in a BBC factual programme about the Gaza conflict."
The film was removed from the BBC's streaming service in the month of February after the boy's family links were revealed, and in this past July an corporation's own inquiry found it infringed the corporation's content policies on factual correctness.
A corporation official stated: "The regulator's decision is in accordance with the results of the corporation's inquiry, that there was a major oversight in the film in relation to the BBC's Editorial Guidelines on factual correctness, which reflects clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we comply with Ofcom's decision in complete. We will follow the sanction as soon as the timing and wording are determined."
