The British broadcaster committed a "significant breach" of industry standards by not revealing that the voice of a documentary about the Gaza conflict was the son of a Hamas representative, according to regulatory body Ofcom.
An investigation by the broadcasting watchdog into Gaza: How to Survive a Warzone has found that the documentary was "substantially inaccurate".
The head of the BBC had earlier expressed regret, noting there had been "a significant failing in relation to truthfulness".
The regulator has directed the broadcaster to air a evening declaration about its decisions.
"Given this constitutes a major infringement of our regulations, we are ordering the broadcaster to broadcast a statement of our conclusions against it on the BBC's second channel at 21:00, with a timing to be determined," the statement read.
'Risk to Erode Credibility'
The regulator's announcement said: "The inquiry we conducted found that the programme's omission to reveal that the voice's parent occupied a post in the Hamas-administered administration was significantly deceptive.
"It meant that the viewers did not have critical information which may have been extremely pertinent to their judgment of the voice and the information he presented.
"Credibility is at the heart of the connection between a broadcaster and its viewers, especially for a state-funded media outlet such as the British Broadcasting Corporation.
"This failing had the possibility to damage the very considerable degrees of credibility that audiences would have invested in a factual film from the broadcaster about the Israel-Gaza war."
The programme was pulled from iPlayer in the month of February after the presenter's familial connections were revealed, and in this past July an internal BBC review determined it violated the broadcaster's content policies on factual correctness.
A representative for the broadcaster said: "The Ofcom ruling is in line with the conclusions of the internal assessment, that there was a major oversight in the programme in relation to the BBC's Editorial Guidelines on accuracy, which reflects clause 2.2 of the regulator's media standards.
"We have apologised for this and we accept the regulator's ruling in its entirety. We will follow the sanction as soon as the date and wording are determined."
