The public service broadcaster committed a "serious breach" of media regulations by failing to disclose that the narrator of a film about the Gaza situation was the offspring of a Hamas official, as determined by UK media regulator Ofcom.
An probe by the media regulator into the programme Gaza: How to Survive a Warzone has concluded that the documentary was "substantially inaccurate".
The BBC's director general had earlier expressed regret, saying there had been "a significant failing in relation to truthfulness".
The authority has ordered the corporation to air a evening declaration about its decisions.
"Given this constitutes a serious breach of our rules, we are directing the corporation to broadcast a message of our findings against it on BBC2 at nine o'clock in the evening, with a date to be determined," the regulator stated.
'Possibility to Damage Credibility'
The authority's announcement stated: "Our investigation found that the documentary's lack of disclosure that the narrator's father occupied a post in the Hamas-run authority was substantially inaccurate.
"This implied that the viewers did not have essential details which may have been highly relevant to their judgment of the narrator and the content he shared.
"Confidence is at the heart of the connection between a broadcaster and its viewers, particularly for a national broadcasting corporation such as the British Broadcasting Corporation.
"This oversight had the possibility to damage the significantly high amounts of confidence that viewers would have placed in a BBC factual programme about the conflict in Gaza."
The documentary was pulled from the online platform in the month of February after the narrator's familial connections emerged, and in July an corporation's own inquiry found it infringed the corporation's content policies on factual correctness.
A BBC spokesperson stated: "The authority's determination is in accordance with the findings of the corporation's inquiry, that there was a major oversight in the programme in relation to the corporation's content standards on accuracy, which reflects Rule 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 comply with the sanction as soon as the date and wording are confirmed."
