The public service broadcaster was found to have committed a "significant breach" of broadcasting rules by not revealing that the presenter of a documentary about the Gaza situation was the offspring of a Hamas administrator, according to UK media regulator Ofcom.
An probe by Ofcom into Gaza: How to Survive a Warzone has found that the documentary was "materially misleading".
The chief executive of the broadcaster had already issued an apology, noting there had been "a major oversight in relation to accuracy".
The regulator has instructed the corporation to transmit a prime-time declaration about its findings.
"Since this amounts to a serious breach of our rules, we are directing the corporation to air a message of our determinations against it on BBC2 at nine o'clock in the evening, with a schedule to be finalised," the statement read.
'Potential to Erode Trust'
The regulator's statement stated: "Our investigation concluded that the documentary's lack of disclosure that the narrator's male guardian occupied a post in the Hamas-controlled government was materially misleading.
"It meant that the public did not have vital facts which may have been highly relevant to their evaluation of the narrator and the information he provided.
"Trust is at the heart of the connection between a broadcaster and its viewers, particularly for a state-funded media outlet such as the BBC.
"This error had the possibility to erode the exceptionally strong degrees of trust that audiences would have invested in a BBC factual programme about the conflict in Gaza."
The film was removed from the online platform in the month of February after the presenter's familial connections were revealed, and in July an internal BBC review determined it infringed the organization's content policies on factual correctness.
A corporation official commented: "The Ofcom ruling is in accordance with the conclusions of the corporation's inquiry, that there was a major oversight in the film in relation to the BBC's Editorial Guidelines on factual correctness, which aligns with Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we agree with the regulator's ruling in its entirety. We will adhere to the directive as soon as the timing and wording are determined."
