The public service broadcaster committed a "serious breach" of media regulations by failing to disclose that the presenter of a programme about the Gaza conflict was the child of a Hamas administrator, as determined by regulatory body Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has found that the programme was "materially misleading".
The chief executive of the broadcaster had previously apologised, noting there had been "a major oversight in relation to factual correctness".
Ofcom has directed the corporation to transmit a peak-time statement about its decisions.
"Since this amounts to a serious breach of our regulations, we are directing the broadcaster to transmit a message of our findings against it on BBC2 at nine o'clock in the evening, with a timing to be determined," the regulator stated.
'Risk to Damage Confidence'
The regulator's announcement stated: "Our probe concluded that the documentary's failure to disclose that the voice's father held a position in the Hamas-administered authority was substantially inaccurate.
"Consequently that the audience did not have vital facts which may have been very significant to their assessment of the presenter and the content he shared.
"Trust is at the core of the connection between a media organization and its viewers, especially for a state-funded media outlet such as the public broadcaster.
"This error had the risk to erode the exceptionally strong degrees of confidence that audiences would have put in a factual film from the broadcaster about the Gaza conflict."
The programme was removed from the BBC's streaming service in February after the presenter's family links emerged, and in this past July an internal BBC review determined it breached the broadcaster's content policies on accuracy.
A representative for the broadcaster said: "The Ofcom ruling is in line with the conclusions of the internal assessment, that there was a major oversight in the programme in relation to the BBC's Editorial Guidelines on truthfulness, which reflects regulation 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we agree with the authority's determination in full. We will adhere to the sanction as soon as the timing and wording are confirmed."
