The British broadcaster engaged in a "major breach" of media regulations by omitting to mention that the narrator of a film about Gaza was the son of a Hamas representative, as determined by British broadcasting authority Ofcom.
An probe by the media regulator into the programme Gaza: How to Survive a Warzone has concluded that the film was "materially misleading".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a major oversight in relation to factual correctness".
The regulator has instructed the corporation to broadcast a evening declaration about its decisions.
"Given this constitutes a serious breach of our regulations, we are instructing the BBC to transmit a statement of our determinations against it on the BBC's second channel at nine o'clock in the evening, with a schedule to be finalised," the regulator stated.
'Possibility to Erode Credibility'
The watchdog's statement said: "Our investigation concluded that the documentary's omission to reveal that the narrator's parent held a post in the Hamas-run administration was substantially inaccurate.
"This implied that the public did not have critical information which may have been very significant to their evaluation of the narrator and the details he provided.
"Credibility is at the center of the relationship between a media organization and its viewers, notably for a national broadcasting corporation such as the public broadcaster.
"This error had the risk to damage the very considerable amounts of confidence that the public would have put in a factual film from the broadcaster about the Gaza conflict."
The programme was pulled from iPlayer in February after the boy's personal associations were revealed, and in this past July an internal BBC review concluded it infringed the organization's content policies on accuracy.
A corporation official commented: "The regulator's decision is in line with the results of the corporation's inquiry, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which reflects regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we agree with the regulator's ruling in complete. We will adhere to the penalty as soon as the date and language are finalised."