The British broadcaster was found to have committed a "significant breach" of media regulations by failing to disclose that the voice of a programme about the Gaza situation was the son of a Hamas official, as ruled by regulatory body Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, noting there had been "a significant failing in relation to truthfulness".
The regulator has ordered the corporation to transmit a prime-time statement about its conclusions.
"Given this constitutes a significant violation of our code, we are ordering the broadcaster to transmit a statement of our conclusions against it on the BBC's second channel at 9pm, with a timing to be determined," the statement read.
'Potential to Damage Credibility'
The regulator's statement declared: "Our probe found that the documentary's omission to reveal that the voice's father held a post in the Hamas-controlled government was significantly deceptive.
"This implied that the viewers did not have essential details which may have been highly relevant to their evaluation of the voice and the information he shared.
"Trust is at the center of the connection between a television network and its audience, particularly for a national broadcasting corporation such as the BBC.
"This failing had the risk to erode the significantly high amounts of credibility that the public would have invested in a BBC factual programme about the Israel-Gaza war."
The film was pulled from the BBC's streaming service in February after the boy's personal associations came to light, and in this past July an internal BBC review determined it infringed the organization's journalistic standards on truthfulness.
A corporation official said: "The regulator's decision is in line with the conclusions of the internal assessment, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on truthfulness, which reflects Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with the regulator's ruling in its entirety. We will follow the sanction as soon as the date and language are finalised."
