The BBC engaged in a "significant breach" of industry standards by not revealing that the narrator of a documentary about the Gaza situation was the child of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The BBC's director general had previously apologised, saying there had been "a serious error in relation to truthfulness".
The authority has instructed the broadcaster to broadcast a evening announcement about its findings.
"As this represents a significant violation of our code, we are instructing the BBC to transmit a statement of our determinations against it on BBC2 at 21:00, with a date to be finalised," it said.
'Risk to Erode Trust'
The watchdog's statement declared: "Our investigation determined that the film's failure to disclose that the narrator's parent held a post in the Hamas-administered government was significantly deceptive.
"This implied that the public did not have essential details which may have been extremely pertinent to their evaluation of the voice and the content he shared.
"Trust is at the heart of the relationship between a media organization and its public, notably for a national broadcasting corporation such as the public broadcaster.
"This error had the potential to erode the exceptionally strong amounts of credibility that audiences would have invested in a BBC factual programme about the conflict in Gaza."
The programme was pulled from iPlayer in the month of February after the presenter's family links were revealed, and in July an internal BBC review determined it violated the organization's content policies on truthfulness.
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 broadcaster's journalistic policies on factual correctness, which corresponds to regulation 2.2 of the regulator's media standards.
"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 timing and language are determined."
