The British broadcaster committed a "serious breach" of industry standards by omitting to mention that the narrator of a film about the Gaza situation was the child of a Hamas official, as determined by UK media regulator Ofcom.
An investigation by the broadcasting watchdog into Gaza: How to Survive a Warzone has concluded that the film was "materially misleading".
The BBC's director general had previously apologised, saying there had been "a serious error in relation to factual correctness".
The regulator has ordered the corporation to air a peak-time statement about its decisions.
"Given this constitutes a serious breach of our regulations, we are ordering the broadcaster to broadcast a message of our determinations against it on BBC2 at 21:00, with a date to be determined," the regulator stated.
'Possibility to Damage Confidence'
The watchdog's statement declared: "Our probe found that the film's omission to reveal that the narrator's father occupied a post in the Hamas-controlled government was materially misleading.
"It meant that the audience did not have vital facts which may have been highly relevant to their assessment of the presenter and the information he provided.
"Trust is at the center of the relationship between a media organization and its viewers, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This error had the possibility to erode the exceptionally strong levels of confidence that the public would have placed in a factual film from the broadcaster about the conflict in Gaza."
The documentary was removed from the online platform in last February after the narrator's family links came to light, and in July an broadcaster's internal assessment found it breached the organization's content policies on truthfulness.
A BBC spokesperson commented: "The Ofcom ruling is in accordance with the results of the corporation's inquiry, that there was a major oversight in the documentary in relation to the corporation's content standards on truthfulness, which aligns with regulation 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we accept Ofcom's decision in complete. We will follow the penalty as soon as the schedule and language are determined."
