The British broadcaster engaged in a "major breach" of industry standards by omitting to mention that the presenter of a film about the Gaza situation was the child of a Hamas administrator, as ruled by UK media regulator Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The head of the BBC had already issued an apology, noting there had been "a serious error in relation to truthfulness".
The authority has instructed the BBC to broadcast a evening statement about its decisions.
"Given this constitutes a major infringement of our rules, we are ordering the corporation to transmit a message of our conclusions against it on BBC Two at 9pm, with a date to be determined," it said.
'Risk to Damage Trust'
The authority's report declared: "Our investigation found that the film's lack of disclosure that the narrator's parent served in a position in the Hamas-run authority was substantially inaccurate.
"This implied that the audience did not have vital facts which may have been very significant to their judgment of the presenter and the information he shared.
"Trust is at the center of the connection between a television network and its audience, especially for a state-funded media outlet such as the public broadcaster.
"This error had the possibility to erode the very considerable amounts of confidence that viewers would have put in a factual film from the broadcaster about the Gaza conflict."
The film was pulled from the BBC's streaming service in last February after the presenter's family links came to light, and in this past July an corporation's own inquiry concluded it violated the corporation's content policies on accuracy.
A BBC spokesperson stated: "The Ofcom ruling is in accordance with the findings of Peter Johnston's review, that there was a significant failing in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we accept the authority's determination in full. We will adhere to the directive as soon as the timing and wording are determined."
