The BBC was found to have committed a "significant breach" of broadcasting rules by omitting to mention that the presenter of a film about Gaza was the child of a Hamas representative, as determined by British broadcasting authority Ofcom.
An probe by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the documentary was "substantially inaccurate".
The head of the BBC had earlier expressed regret, saying there had been "a major oversight in relation to factual correctness".
Ofcom has instructed the BBC to broadcast a prime-time announcement about its decisions.
"Since this amounts to a significant violation of our regulations, we are instructing the broadcaster to transmit a message of our determinations against it on BBC2 at 21:00, with a schedule to be confirmed," the statement read.
'Possibility to Erode Trust'
The authority's report stated: "Our probe found that the documentary's failure to disclose that the presenter's male guardian held a role in the Hamas-controlled administration was materially misleading.
"This implied that the public did not have vital facts which may have been highly relevant to their evaluation of the presenter and the details he presented.
"Confidence is at the core of the relationship between a media organization and its viewers, especially for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the possibility to erode the significantly high amounts of trust that audiences would have put in a factual film from the broadcaster about the conflict in Gaza."
The film was removed from the online platform in last February after the presenter's personal associations emerged, and in this past July an internal BBC review concluded it violated the corporation's editorial guidelines on accuracy.
A representative for the broadcaster commented: "The Ofcom ruling is in line with the results of the internal assessment, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to clause 2.2 of the regulator's media standards.
"We issued an apology for this and we agree with the regulator's ruling in full. We will follow the directive as soon as the timing and language are finalised."
