The British broadcaster was found to have committed a "significant breach" of industry standards by not revealing that the presenter of a documentary about the Gaza conflict was the child of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the programme was "significantly deceptive".
The head of the BBC had already issued an apology, noting there had been "a major oversight in relation to accuracy".
The authority has directed the broadcaster to transmit a prime-time statement about its conclusions.
"Since this amounts to a serious breach of our regulations, we are instructing the BBC to transmit a statement of our conclusions against it on the BBC's second channel at nine o'clock in the evening, with a date to be confirmed," the regulator stated.
'Potential to Damage Confidence'
The authority's statement stated: "Our investigation concluded that the documentary's failure to disclose that the presenter's parent held a role in the Hamas-run government was significantly deceptive.
"Consequently that the viewers did not have vital facts which may have been highly relevant to their judgment of the presenter and the content he presented.
"Confidence is at the heart of the relationship between a broadcaster and its public, particularly for a national broadcasting corporation such as the BBC.
"This oversight had the risk to damage the exceptionally strong amounts of trust that viewers would have invested in a documentary produced by the BBC about the Gaza conflict."
The film was withdrawn from the BBC's streaming service in February after the narrator's family links were revealed, and in the month of July an corporation's own inquiry found it infringed the organization's editorial guidelines on accuracy.
A representative for the broadcaster said: "The authority's determination is in line with the findings of Peter Johnston's review, that there was a major oversight in the film in relation to the BBC's Editorial Guidelines on truthfulness, which corresponds to Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we agree with the authority's determination in complete. We will follow the sanction as soon as the date and language are confirmed."
