The BBC was found to have committed a "significant breach" of industry standards by omitting to mention that the presenter of a programme about the Gaza situation was the child of a Hamas official, as ruled by UK media regulator Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has found that the film was "substantially inaccurate".
The chief executive of the broadcaster had already issued an apology, saying there had been "a significant failing in relation to factual correctness".
Ofcom has directed the BBC to air a evening statement about its conclusions.
"Given this constitutes a major infringement of our rules, we are instructing the BBC to transmit a statement of our conclusions against it on the BBC's second channel at 9pm, with a date to be determined," the statement read.
'Potential to Damage Credibility'
The authority's announcement declared: "Our investigation found that the documentary's lack of disclosure that the voice's male guardian held a position in the Hamas-administered administration was materially misleading.
"This implied that the audience did not have essential details which may have been highly relevant to their judgment of the narrator and the information he shared.
"Trust is at the center of the bond between a television network and its audience, especially for a state-funded media outlet such as the British Broadcasting Corporation.
"This failing had the possibility to damage the exceptionally strong amounts of credibility that audiences would have invested in a factual film from the broadcaster about the Gaza conflict."
The programme 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 corporation's own inquiry found it infringed the corporation's content policies on accuracy.
A corporation official stated: "The Ofcom ruling is in accordance with the conclusions of the internal assessment, that there was a major oversight in the programme in relation to the broadcaster's journalistic policies on factual correctness, which reflects clause 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with the regulator's ruling in its entirety. We will follow the sanction as soon as the date and wording are determined."
