The public service broadcaster was found to have committed a "significant breach" of broadcasting rules by omitting to mention that the narrator of a film about Gaza was the offspring of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has concluded that the programme was "materially misleading".
The head of the BBC had already issued an apology, stating there had been "a serious error in relation to accuracy".
Ofcom has directed the broadcaster to broadcast a evening declaration about its findings.
"Given this constitutes a significant violation of our regulations, we are directing the broadcaster to broadcast a announcement of our conclusions against it on BBC2 at 9pm, with a schedule to be finalised," the statement read.
'Potential to Damage Credibility'
The regulator's statement stated: "Our investigation found that the programme's omission to reveal that the presenter's male guardian served in a role in the Hamas-controlled government was substantially inaccurate.
"It meant that the public did not have essential details which may have been very significant to their evaluation of the voice and the information he presented.
"Confidence is at the heart of the bond between a broadcaster and its viewers, particularly for a public service broadcaster such as the BBC.
"This failing had the possibility to undermine the very considerable levels of credibility that audiences would have put in a factual film from the broadcaster about the conflict in Gaza."
The documentary was removed from iPlayer in the month of February after the narrator's familial connections were revealed, and in the month of July an corporation's own inquiry found it infringed the organization's content policies on truthfulness.
A representative for the broadcaster commented: "The authority's determination is in accordance with the conclusions of the internal assessment, that there was a major oversight in the documentary in relation to the broadcaster's journalistic policies on truthfulness, which reflects clause 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we agree with the regulator's ruling in complete. We will adhere to the directive as soon as the schedule and wording are determined."
