The British broadcaster engaged in a "major breach" of media regulations by omitting to mention that the presenter of a film about Gaza was the son of a Hamas representative, according to regulatory body Ofcom.
An probe by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The head of the BBC had previously apologised, noting there had been "a significant failing in relation to accuracy".
Ofcom has instructed the broadcaster to transmit a prime-time statement about its decisions.
"Since this amounts to a serious breach of our rules, we are instructing the BBC to air a statement of our conclusions against it on BBC Two at 21:00, with a date to be determined," it said.
'Risk to Undermine Credibility'
The authority's statement declared: "The inquiry we conducted found that the film's omission to reveal that the voice's parent served in a position in the Hamas-administered government was substantially inaccurate.
"It meant that the public did not have essential details which may have been extremely pertinent to their evaluation of the narrator and the information he presented.
"Credibility is at the center of the bond between a broadcaster and its audience, especially for a state-funded media outlet such as the public broadcaster.
"This failing had the possibility to undermine the very considerable degrees of credibility that audiences would have placed in a documentary produced by the BBC about the Gaza conflict."
The programme was pulled from the online platform in February after the presenter's family links emerged, and in this past July an corporation's own inquiry found it infringed the organization's editorial guidelines on accuracy.
A corporation official said: "The authority's determination is in accordance with the conclusions of the internal assessment, that there was a major oversight in the documentary in relation to the corporation's content standards on accuracy, which aligns with regulation 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we accept the regulator's ruling in complete. We will comply with the sanction as soon as the schedule and wording are confirmed."
