The BBC was found to have committed a "serious breach" of industry standards by failing to disclose that the voice of a programme about Gaza was the offspring of a Hamas representative, as determined by British broadcasting authority Ofcom.
An inquiry by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The head of the BBC had already issued an apology, stating there had been "a significant failing in relation to factual correctness".
Ofcom has directed the BBC to broadcast a evening statement about its findings.
"Since this amounts to a serious breach of our code, we are directing the corporation to broadcast a statement of our conclusions against it on the BBC's second channel at nine o'clock in the evening, with a timing to be confirmed," the regulator stated.
'Possibility to Undermine Confidence'
The watchdog's report stated: "Our probe concluded that the film's omission to reveal that the voice's father occupied a role in the Hamas-run authority was substantially inaccurate.
"This implied that the public did not have essential details which may have been highly relevant to their judgment of the voice and the details he provided.
"Confidence is at the heart of the connection between a media organization and its public, particularly for a state-funded media outlet such as the public broadcaster.
"This error had the potential to damage the exceptionally strong amounts of trust that audiences would have invested in a factual film from the broadcaster about the conflict in Gaza."
The film was removed from the BBC's streaming service in the month of February after the presenter's family links came to light, and in the month of July an internal BBC review determined it infringed the corporation's editorial guidelines on truthfulness.
A representative for the broadcaster said: "The Ofcom ruling is in line with the conclusions of the internal assessment, that there was a serious error in the documentary in relation to the corporation's content standards on truthfulness, which corresponds to regulation 2.2 of the regulator's media standards.
"We have apologised for this and we comply with the regulator's ruling in complete. We will follow the directive as soon as the timing and wording are confirmed."
