The public service broadcaster engaged in a "major breach" of media regulations by failing to disclose that the presenter of a documentary about Gaza was the offspring of a Hamas official, as ruled by British broadcasting authority Ofcom.
An probe by the media regulator into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The head of the BBC had previously apologised, saying there had been "a significant failing in relation to factual correctness".
The regulator has directed the corporation to broadcast a peak-time statement about its findings.
"Given this constitutes a significant violation of our rules, we are instructing the BBC to broadcast a statement of our determinations against it on the BBC's second channel at nine o'clock in the evening, with a schedule to be confirmed," the statement read.
'Possibility to Undermine Trust'
The watchdog's announcement stated: "Our probe concluded that the documentary's lack of disclosure that the presenter's father held a post in the Hamas-controlled government was substantially inaccurate.
"It meant that the public did not have vital facts which may have been extremely pertinent to their judgment of the presenter and the content he presented.
"Credibility is at the center of the relationship between a broadcaster and its audience, especially for a public service broadcaster such as the British Broadcasting Corporation.
"This error had the risk to undermine the exceptionally strong levels of trust that the public would have placed in a documentary produced by the BBC about the Gaza conflict."
The programme was pulled from the BBC's streaming service in last February after the boy's personal associations came to light, and in this past July an corporation's own inquiry concluded it infringed the organization's editorial guidelines on truthfulness.
A corporation official commented: "The authority's determination is in accordance with the results of the internal assessment, that there was a major oversight in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which aligns with clause 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with the authority's determination in its entirety. We will comply with the penalty as soon as the timing and wording are determined."