The BBC was found to have committed a "significant breach" of media regulations by failing to disclose that the voice of a programme about the Gaza situation was the son of a Hamas representative, as determined by British broadcasting authority Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the documentary was "significantly deceptive".
The chief executive of the broadcaster had earlier expressed regret, saying there had been "a major oversight in relation to factual correctness".
The authority has ordered the BBC to broadcast a peak-time statement about its conclusions.
"Since this amounts to a major infringement of our rules, we are instructing the corporation to air a announcement of our findings against it on the BBC's second channel at nine o'clock in the evening, with a date to be confirmed," the statement read.
'Potential to Undermine Credibility'
The regulator's announcement declared: "The inquiry we conducted determined that the documentary's omission to reveal that the presenter's father held a post in the Hamas-controlled administration was materially misleading.
"It meant that the audience did not have vital facts which may have been very significant to their assessment of the narrator and the details he presented.
"Trust is at the heart of the connection between a media organization and its audience, especially for a national broadcasting corporation such as the BBC.
"This error had the possibility to erode the very considerable amounts of trust that viewers would have put in a BBC factual programme about the Israel-Gaza war."
The film was removed from iPlayer in February after the narrator's personal associations came to light, and in the month of July an broadcaster's internal assessment found it infringed the organization's content policies on truthfulness.
A representative for the broadcaster commented: "The authority's determination is in agreement with the conclusions of the corporation's inquiry, that there was a major oversight in the programme in relation to the BBC's Editorial Guidelines on truthfulness, which reflects Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we agree with Ofcom's decision in its entirety. We will adhere to the penalty as soon as the schedule and language are finalised."
