The British broadcaster was found to have committed a "serious breach" of broadcasting rules by omitting to mention that the voice of a documentary about Gaza was the offspring of a Hamas official, as ruled by regulatory body Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has found that the film was "materially misleading".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a serious error in relation to truthfulness".
The authority has ordered the corporation to transmit a prime-time declaration about its decisions.
"Since this amounts to a significant violation of our regulations, we are directing the corporation to transmit a statement of our findings against it on the BBC's second channel at 9pm, with a schedule to be finalised," the regulator stated.
'Potential to Damage Confidence'
The regulator's announcement stated: "Our investigation determined that the film's omission to reveal that the narrator's parent served in a role in the Hamas-controlled authority was significantly deceptive.
"This implied that the viewers did not have essential details which may have been highly relevant to their assessment of the voice and the information he presented.
"Trust is at the core of the relationship between a broadcaster and its public, especially for a public service broadcaster such as the BBC.
"This oversight had the possibility to undermine the exceptionally strong amounts of confidence that viewers would have put in a factual film from the broadcaster about the Gaza conflict."
The programme was withdrawn from the online platform in last February after the narrator's familial connections were revealed, and in July an broadcaster's internal assessment concluded it breached the broadcaster's journalistic standards on truthfulness.
A representative for the broadcaster said: "The Ofcom ruling is in line with the findings of the internal assessment, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on truthfulness, which aligns with Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with the regulator's ruling in complete. We will comply with the sanction as soon as the timing and wording are determined."
