The public service broadcaster engaged in a "significant breach" of media regulations by omitting to mention that the voice of a programme about the Gaza situation was the offspring of a Hamas official, as determined by UK media regulator Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has found that the programme was "materially misleading".
The BBC's director general had previously apologised, stating there had been "a major oversight in relation to accuracy".
The regulator has instructed the BBC to transmit a peak-time declaration about its findings.
"Given this constitutes a serious breach of our regulations, we are directing the BBC to broadcast a announcement of our determinations against it on BBC2 at 21:00, with a schedule to be confirmed," the statement read.
'Possibility to Undermine Trust'
The watchdog's report stated: "Our investigation determined that the programme's lack of disclosure that the voice's male guardian occupied a position in the Hamas-administered administration was substantially inaccurate.
"Consequently that the audience did not have essential details which may have been very significant to their assessment of the presenter and the information he provided.
"Credibility is at the center of the relationship between a broadcaster and its viewers, notably for a state-funded media outlet such as the public broadcaster.
"This error had the risk to damage the exceptionally strong levels of trust that viewers would have invested in a documentary produced by the BBC about the Israel-Gaza war."
The film was withdrawn from iPlayer in the month of February after the presenter's personal associations came to light, and in the month of July an corporation's own inquiry found it violated the organization's journalistic standards on factual correctness.
A representative for the broadcaster said: "The regulator's decision is in line with the conclusions of the corporation's inquiry, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on factual correctness, which aligns with clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we comply with Ofcom's decision in complete. We will follow the directive as soon as the schedule and wording are determined."
