The British broadcaster was found to have committed a "major breach" of industry standards by not revealing that the voice of a documentary about Gaza was the son of a Hamas official, as ruled by regulatory body Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the documentary was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, stating there had been "a serious error in relation to factual correctness".
The authority has directed the corporation to air a evening declaration about its findings.
"Since this amounts to a major infringement of our code, we are instructing the BBC to transmit a statement of our determinations against it on BBC2 at 9pm, with a date to be finalised," the statement read.
'Possibility to Erode Credibility'
The regulator's report said: "Our investigation found that the film's failure to disclose that the voice's father held a position in the Hamas-administered authority was materially misleading.
"Consequently that the viewers did not have vital facts which may have been extremely pertinent to their evaluation of the narrator and the content he provided.
"Confidence is at the center of the relationship between a broadcaster and its audience, especially for a national broadcasting corporation such as the British Broadcasting Corporation.
"This error had the risk to damage the exceptionally strong amounts of confidence that audiences would have placed in a documentary produced by the BBC about the Gaza conflict."
The programme was withdrawn from the online platform in February after the narrator's personal associations were revealed, and in the month of July an broadcaster's internal assessment found it infringed the broadcaster's editorial guidelines on factual correctness.
A BBC spokesperson commented: "The Ofcom ruling is in agreement with the findings of the internal assessment, that there was a major oversight in the documentary in relation to the broadcaster's journalistic policies on factual correctness, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept the authority's determination in complete. We will follow the sanction as soon as the date and wording are confirmed."
