The British broadcaster was found to have committed a "serious breach" of broadcasting rules by failing to disclose that the narrator of a programme about Gaza was the child of a Hamas administrator, as ruled by UK media regulator Ofcom.
An investigation by the broadcasting watchdog into Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The BBC's director general had already issued an apology, noting there had been "a major oversight in relation to truthfulness".
The regulator has directed the broadcaster to transmit a evening declaration about its findings.
"Given this constitutes a serious breach of our rules, we are directing the corporation to transmit a statement of our conclusions against it on BBC Two at 9pm, with a date to be determined," the regulator stated.
'Possibility to Undermine Credibility'
The authority's announcement declared: "The inquiry we conducted concluded that the documentary's lack of disclosure that the voice's parent occupied a position in the Hamas-controlled 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 presenter and the information he presented.
"Trust is at the core of the bond between a media organization and its public, notably for a state-funded media outlet such as the BBC.
"This oversight had the possibility to erode the significantly high amounts of confidence that viewers would have put in a BBC factual programme about the Gaza conflict."
The programme was pulled from the online platform in the month of February after the narrator's family links were revealed, and in the month of July an internal BBC review concluded it infringed the organization's journalistic standards on truthfulness.
A corporation official commented: "The Ofcom ruling is in line with the conclusions of Peter Johnston's review, that there was a major oversight in the programme in relation to the corporation's content standards on accuracy, which reflects clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept Ofcom's decision in complete. We will comply with the penalty as soon as the timing and language are finalised."
