The public service broadcaster was found to have committed a "serious breach" of industry standards by omitting to mention that the presenter of a documentary about Gaza was the child of a Hamas representative, as determined by British broadcasting authority Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has found that the film was "substantially inaccurate".
The chief executive of the broadcaster had already issued an apology, stating there had been "a significant failing in relation to accuracy".
Ofcom has ordered the corporation to air a evening announcement about its findings.
"Since this amounts to a significant violation of our rules, we are instructing the broadcaster to transmit a message of our determinations against it on the BBC's second channel at 21:00, with a timing to be confirmed," the regulator stated.
'Risk to Damage Trust'
The regulator's announcement stated: "Our investigation determined that the documentary's failure to disclose that the voice's father served in a post in the Hamas-administered authority was substantially inaccurate.
"Consequently that the public did not have vital facts which may have been very significant to their assessment of the presenter and the information he shared.
"Confidence is at the core of the relationship between a television network and its public, notably for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the risk to damage the significantly high levels of trust that the public would have put in a factual film from the broadcaster about the Israel-Gaza war."
The film was removed from the BBC's streaming service in February after the presenter's family links were revealed, and in July an broadcaster's internal assessment concluded it breached the broadcaster's editorial guidelines on factual correctness.
A corporation official stated: "The authority's determination is in line with the conclusions of Peter Johnston's review, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on truthfulness, which reflects regulation 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we agree with Ofcom's decision in complete. We will adhere to the sanction as soon as the timing and wording are determined."
