The public service broadcaster engaged in a "significant breach" of industry standards by omitting to mention that the voice of a documentary about the Gaza situation was the child of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An probe by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the documentary was "materially misleading".
The chief executive of the broadcaster had previously apologised, saying there had been "a significant failing in relation to truthfulness".
Ofcom has directed the BBC to broadcast a evening announcement about its decisions.
"Since this amounts to a significant violation of our code, we are directing the corporation to transmit a message of our determinations against it on BBC2 at 9pm, with a date to be confirmed," the statement read.
'Possibility to Undermine Confidence'
The regulator's statement stated: "Our probe determined that the documentary's failure to disclose that the narrator's male guardian served in a position in the Hamas-administered government was significantly deceptive.
"Consequently that the viewers did not have critical information which may have been very significant to their evaluation of the voice and the information he provided.
"Confidence is at the core of the relationship between a television network and its audience, notably for a state-funded media outlet such as the public broadcaster.
"This oversight had the potential to damage the very considerable degrees of confidence that viewers would have invested in a documentary produced by the BBC about the conflict in Gaza."
The programme was withdrawn from the online platform in February after the presenter's personal associations were revealed, and in this past July an corporation's own inquiry found it infringed the organization's content policies on factual correctness.
A corporation official stated: "The regulator's decision is in accordance with the conclusions of the corporation's inquiry, that there was a significant failing in the programme in relation to the corporation's content standards on truthfulness, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we comply with the authority's determination in its entirety. We will comply with the sanction as soon as the timing and wording are finalised."
