The public service broadcaster committed a "serious breach" of industry standards by failing to disclose that the voice of a documentary about the Gaza situation was the offspring of a Hamas official, as determined by regulatory body Ofcom.
An investigation by the media regulator 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, stating there had been "a significant failing in relation to factual correctness".
Ofcom has instructed the broadcaster to air a evening statement about its findings.
"Since this amounts to a significant violation of our rules, we are directing the BBC to transmit a message of our findings against it on BBC2 at 21:00, with a timing to be finalised," the regulator stated.
'Potential to Undermine Trust'
The regulator's statement stated: "Our investigation determined that the documentary's omission to reveal that the voice's parent occupied a role in the Hamas-controlled administration was substantially inaccurate.
"Consequently that the audience did not have vital facts which may have been extremely pertinent to their assessment of the voice and the content he provided.
"Confidence is at the core of the connection between a media organization and its public, particularly for a national broadcasting corporation such as the BBC.
"This failing had the potential to undermine the exceptionally strong amounts of confidence that the public would have invested in a factual film from the broadcaster about the Gaza conflict."
The film was withdrawn from the online platform in last February after the presenter's familial connections emerged, and in the month of July an broadcaster's internal assessment determined it infringed the organization's journalistic standards on truthfulness.
A corporation official said: "The regulator's decision is in line with the findings of the internal assessment, that there was a major oversight in the programme in relation to the corporation's content standards on truthfulness, which reflects Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we agree with the authority's determination in full. We will comply with the directive as soon as the date and wording are finalised."
