The public service broadcaster was found to have committed a "significant breach" of industry standards by omitting to mention that the narrator of a film about the Gaza conflict was the son of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An inquiry by the media regulator into the documentary titled Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The BBC's director general had previously apologised, noting there had been "a major oversight in relation to accuracy".
The authority has ordered the broadcaster to air a evening announcement about its decisions.
"Given this constitutes a major infringement of our regulations, we are instructing the BBC to broadcast a statement of our conclusions against it on the BBC's second channel at nine o'clock in the evening, with a date to be determined," the regulator stated.
'Possibility to Damage Trust'
The watchdog's announcement declared: "Our probe determined that the documentary's failure to disclose that the presenter's parent held a post in the Hamas-administered authority was substantially inaccurate.
"Consequently that the public did not have critical information which may have been highly relevant to their evaluation of the presenter and the information he presented.
"Confidence is at the center of the bond between a broadcaster and its viewers, notably for a state-funded media outlet such as the BBC.
"This error had the possibility to erode the exceptionally strong amounts of trust that viewers would have invested in a factual film from the broadcaster about the Gaza conflict."
The programme was withdrawn from the BBC's streaming service in last February after the boy's personal associations came to light, and in this past July an broadcaster's internal assessment concluded it infringed the corporation's content policies on truthfulness.
A corporation official stated: "The Ofcom ruling is in agreement with the conclusions of the internal assessment, that there was a significant failing in the documentary in relation to the corporation's content standards on factual correctness, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with the authority's determination in full. We will follow the sanction as soon as the timing and wording are confirmed."
