The public service broadcaster engaged in a "major breach" of industry standards by failing to disclose that the presenter of a programme about the Gaza conflict was the child of a Hamas representative, as determined by regulatory body Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The BBC's director general had previously apologised, stating there had been "a serious error in relation to accuracy".
The regulator has instructed the BBC to air a evening announcement about its decisions.
"As this represents a significant violation of our rules, we are ordering the BBC to air a message of our findings against it on the BBC's second channel at 21:00, with a schedule to be finalised," the statement read.
'Risk to Undermine Trust'
The watchdog's announcement stated: "The inquiry we conducted found that the film's omission to reveal that the presenter's male guardian held a post in the Hamas-administered administration was significantly deceptive.
"This implied that the public did not have critical information which may have been highly relevant to their evaluation of the voice and the content he presented.
"Confidence is at the heart of the bond between a broadcaster and its audience, notably for a national broadcasting corporation such as the BBC.
"This oversight had the possibility to erode the significantly high degrees of credibility that audiences would have invested in a factual film from the broadcaster about the conflict in Gaza."
The documentary was withdrawn from the BBC's streaming service in last February after the boy's familial connections were revealed, and in the month of July an broadcaster's internal assessment found it infringed the broadcaster's editorial guidelines on factual correctness.
A corporation official stated: "The regulator's decision is in agreement with the conclusions of the internal assessment, that there was a serious error in the documentary in relation to the corporation's content standards on truthfulness, which aligns with regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we agree with Ofcom's decision in complete. We will comply with the directive as soon as the schedule and language are confirmed."
