The British broadcaster engaged in a "significant breach" of broadcasting rules by omitting to mention that the presenter of a film about Gaza was the child of a Hamas official, according to British broadcasting authority Ofcom.
An probe by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The head of the BBC had already issued an apology, stating there had been "a major oversight in relation to truthfulness".
The authority has ordered the broadcaster to air a evening announcement about its decisions.
"Since this amounts to a major infringement of our regulations, we are ordering the BBC to broadcast a message of our determinations against it on BBC2 at nine o'clock in the evening, with a schedule to be finalised," the statement read.
'Potential to Erode Credibility'
The regulator's report stated: "Our investigation found that the programme's omission to reveal that the narrator's father held a position in the Hamas-run government was significantly deceptive.
"It meant that the audience did not have vital facts which may have been extremely pertinent to their evaluation of the narrator and the information he provided.
"Confidence is at the center of the connection between a broadcaster and its viewers, notably for a national broadcasting corporation such as the BBC.
"This error had the possibility to damage the significantly high levels of trust that viewers would have put in a BBC factual programme about the Gaza conflict."
The film was withdrawn from the online platform in last February after the narrator's family links came to light, and in this past July an broadcaster's internal assessment concluded it breached the broadcaster's content policies on accuracy.
A BBC spokesperson commented: "The Ofcom ruling is in line with the results of the corporation's inquiry, that there was a serious error in the programme 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 agree with the regulator's ruling in full. We will comply with the sanction as soon as the date and wording are finalised."
