The British broadcaster was found to have committed a "major breach" of media regulations by omitting to mention that the presenter of a programme about the Gaza conflict was the son of a Hamas administrator, according to regulatory body Ofcom.
An probe by Ofcom into Gaza: How to Survive a Warzone has determined that the documentary was "significantly deceptive".
The BBC's director general had earlier expressed regret, stating there had been "a significant failing in relation to factual correctness".
The regulator has directed the corporation to broadcast a peak-time statement about its conclusions.
"Given this constitutes a serious breach of our code, we are directing the BBC to broadcast a announcement of our conclusions against it on BBC2 at 9pm, with a date to be confirmed," the statement read.
'Risk to Damage Confidence'
The regulator's announcement said: "Our probe concluded that the film's lack of disclosure that the narrator's parent held a position in the Hamas-run administration was substantially inaccurate.
"It meant that the public did not have vital facts which may have been extremely pertinent to their evaluation of the presenter and the information he provided.
"Trust is at the heart of the connection between a television network and its viewers, notably for a public service broadcaster such as the public broadcaster.
"This failing had the possibility to undermine the significantly high levels of trust that viewers would have put in a BBC factual programme about the Israel-Gaza war."
The programme was withdrawn from the online platform in the month of February after the narrator's family links emerged, and in the month of July an internal BBC review found it violated the organization's journalistic standards on factual correctness.
A corporation official commented: "The Ofcom ruling is in line with the findings of the internal assessment, that there was a significant failing in the film in relation to the corporation's content standards on accuracy, which reflects clause 2.2 of the regulator's media standards.
"We have apologised for this and we accept Ofcom's decision in full. We will comply with the penalty as soon as the timing and language are finalised."
