The public service broadcaster was found to have committed a "major breach" of media regulations by not revealing that the voice of a film about the Gaza conflict was the son of a Hamas representative, according to British broadcasting authority Ofcom.
An probe by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the programme was "significantly deceptive".
The chief executive of the broadcaster had earlier expressed regret, noting there had been "a serious error in relation to factual correctness".
Ofcom has directed the corporation to transmit a evening declaration about its conclusions.
"Since this amounts to a serious breach of our code, we are ordering the broadcaster to air a message of our findings against it on BBC2 at nine o'clock in the evening, with a timing to be finalised," it said.
'Potential to Damage Credibility'
The authority's report declared: "The inquiry we conducted concluded that the documentary's failure to disclose that the voice's father occupied a position in the Hamas-administered government was materially misleading.
"Consequently that the viewers did not have essential details which may have been highly relevant to their assessment of the voice and the details he presented.
"Confidence is at the core of the connection between a broadcaster and its public, especially for a state-funded media outlet such as the public broadcaster.
"This error had the possibility to erode the exceptionally strong degrees of confidence that the public would have invested in a factual film from the broadcaster about the conflict in Gaza."
The programme was pulled from iPlayer in the month of February after the boy's familial connections were revealed, and in this past July an corporation's own inquiry determined it violated the corporation's journalistic standards on accuracy.
A corporation official said: "The regulator's decision is in line with the results of the internal assessment, that there was a serious error in the programme in relation to the BBC's Editorial Guidelines on truthfulness, which corresponds to regulation 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we comply with the regulator's ruling in full. We will comply with the sanction as soon as the schedule and language are finalised."
