The public service broadcaster engaged in a "significant breach" of media regulations by not revealing that the voice of a programme about the Gaza conflict was the child of a Hamas representative, according to regulatory body Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has determined that the documentary was "materially misleading".
The BBC's director general had earlier expressed regret, noting there had been "a significant failing in relation to accuracy".
Ofcom has directed the BBC to broadcast a prime-time declaration about its decisions.
"Given this constitutes a major infringement of our code, we are ordering the BBC to transmit a announcement of our conclusions against it on BBC2 at nine o'clock in the evening, with a date to be determined," the regulator stated.
'Risk to Erode Confidence'
The regulator's announcement declared: "Our investigation concluded that the programme's omission to reveal that the voice's parent occupied a position in the Hamas-administered authority was substantially inaccurate.
"This implied that the public did not have essential details which may have been highly relevant to their assessment of the narrator and the content he presented.
"Trust is at the core of the bond between a media organization and its public, notably for a public service broadcaster such as the public broadcaster.
"This failing had the possibility to damage the exceptionally strong degrees of credibility that viewers would have put in a factual film from the broadcaster about the Israel-Gaza war."
The documentary was pulled from iPlayer in the month of February after the narrator's familial connections were revealed, and in this past July an corporation's own inquiry found it breached the organization's content policies on accuracy.
A corporation official stated: "The regulator's decision is in line with the findings of the corporation's inquiry, that there was a serious error in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we agree with Ofcom's decision in its entirety. We will adhere to the penalty as soon as the date and wording are determined."
