The public service broadcaster was found to have committed a "major breach" of industry standards by failing to disclose that the narrator of a programme about the Gaza conflict was the son of a Hamas administrator, according to regulatory body Ofcom.
An probe by Ofcom into the documentary titled Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The head of the BBC had already issued an apology, saying there had been "a serious error in relation to factual correctness".
The regulator has directed the corporation to transmit a evening announcement about its findings.
"As this represents a significant violation of our regulations, we are ordering the broadcaster to broadcast a statement of our findings against it on BBC2 at 21:00, with a date to be determined," the statement read.
'Risk to Undermine Confidence'
The regulator's statement stated: "Our probe found that the film's failure to disclose that the presenter's father served in a post in the Hamas-controlled authority was significantly deceptive.
"It meant that the viewers did not have vital facts which may have been highly relevant to their evaluation of the presenter and the content he provided.
"Confidence is at the center of the bond between a television network and its viewers, particularly for a state-funded media outlet such as the BBC.
"This error had the potential to erode the exceptionally strong amounts of credibility that viewers would have put in a BBC factual programme about the Gaza conflict."
The documentary was withdrawn from the BBC's streaming service in last February after the presenter's family links were revealed, and in the month of July an internal BBC review concluded it violated the broadcaster's journalistic standards on accuracy.
A BBC spokesperson commented: "The Ofcom ruling is in line with the findings of the internal assessment, that there was a serious error in the film in relation to the broadcaster's journalistic policies on truthfulness, which corresponds to clause 2.2 of the regulator's media standards.
"We have apologised for this and we agree with the regulator's ruling in complete. We will comply with the sanction as soon as the date and language are determined."
