The British broadcaster engaged in a "serious breach" of industry standards by failing to disclose that the presenter of a film about Gaza was the son of a Hamas representative, according to regulatory body Ofcom.
An probe by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the film was "materially misleading".
The BBC's director general had already issued an apology, saying there had been "a major oversight in relation to truthfulness".
The regulator has instructed the corporation to broadcast a evening statement about its decisions.
"Since this amounts to a significant violation of our rules, we are ordering the BBC to air a announcement of our conclusions against it on BBC Two at 9pm, with a timing to be finalised," the regulator stated.
'Risk to Undermine Credibility'
The authority's report declared: "Our investigation concluded that the documentary's failure to disclose that the presenter's male guardian served in a post in the Hamas-administered government was substantially inaccurate.
"It meant that the audience did not have essential details which may have been very significant to their assessment of the narrator and the details he shared.
"Confidence is at the core of the relationship between a television network and its viewers, notably for a public service broadcaster such as the BBC.
"This failing had the risk to undermine the very considerable degrees of confidence that audiences would have put in a BBC factual programme about the conflict in Gaza."
The documentary was withdrawn from the BBC's streaming service in the month of February after the presenter's familial connections came to light, and in July an internal BBC review found it breached the broadcaster's journalistic standards on accuracy.
A BBC spokesperson said: "The authority's determination is in line with the results of the internal assessment, that there was a major oversight in the programme in relation to the broadcaster's journalistic policies on accuracy, which aligns with clause 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we comply with the authority's determination in complete. We will follow the directive as soon as the schedule and language are confirmed."
