The British broadcaster committed a "significant breach" of broadcasting rules by not revealing that the voice of a film about Gaza was the child of a Hamas official, according to regulatory body Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the programme was "substantially inaccurate".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a serious error in relation to accuracy".
The authority has directed the corporation to transmit a prime-time declaration about its findings.
"As this represents a significant violation of our code, we are ordering the BBC to broadcast a announcement of our conclusions against it on the BBC's second channel at nine o'clock in the evening, with a date to be determined," the regulator stated.
'Potential to Erode Trust'
The regulator's statement declared: "Our investigation determined that the documentary's omission to reveal that the narrator's parent served in a role in the Hamas-controlled authority was substantially inaccurate.
"It meant that the viewers did not have essential details which may have been extremely pertinent to their evaluation of the voice and the content he presented.
"Trust is at the core of the connection between a television network and its public, especially for a state-funded media outlet such as the BBC.
"This failing had the potential to erode the very considerable amounts of credibility that the public would have invested in a documentary produced by the BBC about the Israel-Gaza war."
The documentary was pulled from iPlayer in last February after the presenter's personal associations came to light, and in the month of July an broadcaster's internal assessment found it infringed the organization's content policies on factual correctness.
A corporation official commented: "The authority's determination is in line with the findings of the internal assessment, that there was a significant failing in the film in relation to the BBC's Editorial Guidelines on factual correctness, which aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we accept Ofcom's decision in full. We will comply with the penalty as soon as the date and language are determined."
