The British broadcaster was found to have committed a "serious breach" of media regulations by not revealing that the narrator of a documentary about the Gaza situation was the child of a Hamas official, according to British broadcasting authority Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has found that the film was "significantly deceptive".
The BBC's director general had already issued an apology, noting there had been "a major oversight in relation to factual correctness".
The authority has ordered the corporation to transmit a peak-time announcement about its findings.
"Since this amounts to a significant violation of our rules, we are ordering the BBC to broadcast a announcement of our findings against it on BBC2 at nine o'clock in the evening, with a timing to be confirmed," the statement read.
'Possibility to Damage Credibility'
The watchdog's statement stated: "Our investigation concluded that the programme's failure to disclose that the narrator's parent served in a role in the Hamas-run administration was significantly deceptive.
"This implied that the public did not have essential details which may have been extremely pertinent to their assessment of the presenter and the information he presented.
"Trust is at the heart of the relationship between a media organization and its viewers, especially for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the risk to erode the exceptionally strong degrees of trust that the public would have placed in a documentary produced by the BBC about the Gaza conflict."
The film was removed from the BBC's streaming service in the month of February after the boy's personal associations were revealed, and in this past July an corporation's own inquiry found it infringed the broadcaster's content policies on accuracy.
A representative for the broadcaster stated: "The authority's determination is in line with the conclusions of the internal assessment, that there was a major oversight in the documentary in relation to the BBC's Editorial Guidelines on truthfulness, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with the regulator's ruling in full. We will comply with the penalty as soon as the date and wording are finalised."
