The British broadcaster was found to have committed a "serious breach" of broadcasting rules by not revealing that the voice of a film about the Gaza situation was the son of a Hamas official, as determined by British broadcasting authority Ofcom.
An investigation by the media regulator into the documentary titled Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had already issued an apology, saying there had been "a serious error in relation to truthfulness".
Ofcom has directed the BBC to transmit a evening announcement about its decisions.
"As this represents a serious breach of our rules, we are instructing the BBC to broadcast a message of our conclusions against it on BBC2 at 21:00, with a timing to be finalised," the regulator stated.
'Risk to Undermine Confidence'
The regulator's report declared: "The inquiry we conducted found that the documentary's lack of disclosure that the presenter's parent occupied a post in the Hamas-run administration was materially misleading.
"It meant that the audience did not have critical information which may have been extremely pertinent to their evaluation of the narrator and the content he presented.
"Credibility is at the heart of the relationship between a media organization and its audience, particularly for a state-funded media outlet such as the BBC.
"This oversight had the risk to erode the very considerable degrees of credibility that audiences would have invested in a BBC factual programme about the conflict in Gaza."
The documentary was pulled from iPlayer in the month of February after the narrator's familial connections were revealed, and in July an broadcaster's internal assessment concluded it infringed the broadcaster's content policies on accuracy.
A BBC spokesperson commented: "The Ofcom ruling is in line with the findings of Peter Johnston's review, that there was a major oversight in the documentary in relation to the BBC's Editorial Guidelines on accuracy, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept the authority's determination in its entirety. We will comply with the penalty as soon as the schedule and wording are determined."
