The BBC committed a "serious breach" of media regulations by failing to disclose that the presenter of a programme about the Gaza situation was the offspring of a Hamas representative, as ruled by UK media regulator Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had earlier expressed regret, noting there had been "a major oversight in relation to truthfulness".
The regulator has ordered the broadcaster to transmit a evening declaration about its conclusions.
"As this represents a significant violation of our rules, we are directing the corporation to air a announcement of our findings against it on BBC2 at 9pm, with a date to be finalised," it said.
'Possibility to Damage Trust'
The authority's report stated: "Our investigation concluded that the documentary's lack of disclosure that the voice's father served in a role in the Hamas-run government was materially misleading.
"This implied that the public did not have critical information which may have been very significant to their assessment of the voice and the content he presented.
"Trust is at the core of the bond between a broadcaster and its viewers, especially for a state-funded media outlet such as the public broadcaster.
"This oversight had the risk to undermine the exceptionally strong amounts of credibility that viewers would have placed in a factual film from the broadcaster about the conflict in Gaza."
The programme was pulled from the online platform in last February after the presenter's familial connections were revealed, and in this past July an corporation's own inquiry found it infringed the organization's editorial guidelines on truthfulness.
A BBC spokesperson stated: "The Ofcom ruling is in line with the results of the corporation's inquiry, that there was a significant failing in the programme in relation to the corporation's content standards on factual correctness, which aligns with clause 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we comply with the regulator's ruling in its entirety. We will adhere to the sanction as soon as the date and wording are confirmed."
