The British broadcaster was found to have committed a "serious breach" of industry standards by failing to disclose that the narrator of a programme about Gaza was the offspring of a Hamas representative, as ruled by UK media regulator Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded 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".
The authority has directed the corporation to broadcast a prime-time announcement about its conclusions.
"Given this constitutes a serious breach of our rules, we are directing the corporation to air a statement of our conclusions against it on BBC2 at 21:00, with a schedule to be determined," it said.
'Risk to Damage Trust'
The watchdog's report said: "Our investigation concluded that the programme's failure to disclose that the presenter's male guardian served in a role in the Hamas-administered administration was significantly deceptive.
"This implied that the viewers did not have critical information which may have been highly relevant to their assessment of the narrator and the content he provided.
"Trust is at the center of the relationship between a media organization and its viewers, particularly for a state-funded media outlet such as the BBC.
"This failing had the possibility to undermine the significantly high amounts of trust that the public would have put in a factual film from the broadcaster about the Israel-Gaza war."
The documentary was removed from the BBC's streaming service in the month of February after the presenter's personal associations came to light, and in this past July an internal BBC review found it infringed the organization's journalistic standards on truthfulness.
A BBC spokesperson said: "The regulator's decision is in agreement with the results of the corporation's inquiry, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on accuracy, which reflects Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we accept the regulator's ruling in its entirety. We will comply with the directive as soon as the date and language are finalised."
