The British broadcaster engaged in a "serious breach" of media regulations by omitting to mention that the presenter of a programme about Gaza was the son of a Hamas administrator, as ruled by regulatory body Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the programme was "significantly deceptive".
The head of the BBC had previously apologised, saying there had been "a major oversight in relation to truthfulness".
The authority has instructed the broadcaster to broadcast a evening statement about its findings.
"Given this constitutes a serious breach of our rules, we are instructing the broadcaster to transmit a announcement of our determinations against it on BBC2 at 21:00, with a schedule to be finalised," it said.
'Risk to Damage Confidence'
The authority's statement declared: "Our investigation determined that the film's lack of disclosure that the voice's parent held a post in the Hamas-run administration was substantially inaccurate.
"This implied that the audience 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 connection between a broadcaster and its audience, particularly for a public service broadcaster such as the public broadcaster.
"This error had the possibility to undermine the exceptionally strong degrees of credibility that the public would have placed in a documentary produced by the BBC about the Israel-Gaza war."
The film was pulled from iPlayer in February after the boy's familial connections came to light, and in this past July an corporation's own inquiry determined it violated the corporation's editorial guidelines on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in line with the conclusions of the internal assessment, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on accuracy, which corresponds to regulation 2.2 of the regulator's media standards.
"We have apologised for this and we agree with the authority's determination in its entirety. We will adhere to the sanction as soon as the date and language are determined."
