The British broadcaster committed a "significant breach" of broadcasting rules by omitting to mention that the narrator of a programme about the Gaza conflict was the offspring of a Hamas representative, according to British broadcasting authority Ofcom.
An probe by the media regulator into Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The head of the BBC had previously apologised, stating there had been "a serious error in relation to factual correctness".
The regulator has instructed the broadcaster to broadcast a prime-time announcement about its findings.
"As this represents a major infringement of our regulations, we are instructing the corporation to air a announcement of our conclusions against it on the BBC's second channel at 9pm, with a schedule to be determined," the statement read.
'Potential to Undermine Credibility'
The regulator's statement said: "Our probe concluded that the documentary's failure to disclose that the voice's parent served in a role in the Hamas-controlled administration was significantly deceptive.
"It meant that the viewers did not have critical information which may have been highly relevant to their judgment of the presenter and the details he provided.
"Confidence is at the core of the relationship between a television network and its viewers, particularly for a public service broadcaster such as the BBC.
"This error had the risk to undermine the exceptionally strong degrees of trust that viewers would have put in a BBC factual programme about the conflict in Gaza."
The programme was pulled from the online platform in last February after the presenter's family links were revealed, and in the month of July an corporation's own inquiry concluded it infringed the organization's journalistic standards on truthfulness.
A corporation official stated: "The regulator's decision is in line with the results of the internal assessment, that there was a significant failing in the programme in relation to the broadcaster's journalistic policies on factual correctness, which aligns with regulation 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we accept the regulator's ruling in its entirety. We will follow the sanction as soon as the schedule and wording are finalised."
