The British broadcaster was found to have committed a "major breach" of broadcasting rules by failing to disclose that the narrator of a documentary about Gaza was the offspring of a Hamas administrator, as determined by British broadcasting authority Ofcom.
An probe by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has found that the programme was "significantly deceptive".
The chief executive of the broadcaster had earlier expressed regret, saying there had been "a major oversight in relation to accuracy".
Ofcom has instructed the broadcaster to air a evening statement about its decisions.
"As this represents a major infringement of our rules, we are directing the corporation to broadcast a message of our findings against it on BBC Two at 21:00, with a timing to be determined," it said.
'Potential to Erode Trust'
The watchdog's statement said: "Our investigation found that the film's omission to reveal that the presenter's father served in a position in the Hamas-administered authority was significantly deceptive.
"Consequently that the audience did not have vital facts which may have been very significant to their assessment of the presenter and the information he presented.
"Credibility is at the center of the relationship between a media organization and its viewers, especially for a state-funded media outlet such as the BBC.
"This failing had the potential to undermine the very considerable degrees of confidence that the public would have invested in a factual film from the broadcaster about the Israel-Gaza war."
The film was removed from iPlayer in February after the boy's family links were revealed, and in July an internal BBC review concluded it breached the broadcaster's editorial guidelines on accuracy.
A BBC spokesperson stated: "The Ofcom ruling is in line with the results of the corporation's inquiry, that there was a significant failing in the programme in relation to the corporation's content standards on truthfulness, which corresponds to clause 2.2 of the regulator's media standards.
"We issued an apology for this and we accept the regulator's ruling in its entirety. We will comply with the penalty as soon as the schedule and language are confirmed."
