The British broadcaster was found to have committed a "major breach" of media regulations by failing to disclose that the presenter of a film about Gaza was the child of a Hamas representative, according to British broadcasting authority Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the documentary was "significantly deceptive".
The BBC's director general had previously apologised, stating there had been "a significant failing in relation to accuracy".
Ofcom has instructed the corporation to broadcast a prime-time announcement about its findings.
"As this represents a serious breach of our rules, we are ordering the corporation to broadcast a statement of our findings against it on BBC2 at 9pm, with a schedule to be determined," it said.
'Potential to Damage Credibility'
The watchdog's announcement declared: "The inquiry we conducted found that the programme's failure to disclose that the voice's male guardian served in a post in the Hamas-administered authority was substantially inaccurate.
"Consequently that the viewers did not have essential details which may have been extremely pertinent to their assessment of the narrator and the content he presented.
"Trust is at the center of the connection between a broadcaster and its public, especially for a state-funded media outlet such as the public broadcaster.
"This oversight had the risk to erode the very considerable amounts of confidence that the public would have placed in a documentary produced by the BBC about the Gaza conflict."
The documentary was withdrawn from the BBC's streaming service in last February after the presenter's family links were revealed, and in July an corporation's own inquiry found it violated the broadcaster's content policies on factual correctness.
A corporation official stated: "The Ofcom ruling is in agreement with the conclusions of the internal assessment, that there was a significant failing in the programme in relation to the corporation's content standards on truthfulness, which corresponds to regulation 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we comply with Ofcom's decision in its entirety. We will comply with the penalty as soon as the schedule and language are confirmed."
