The British broadcaster engaged in a "significant breach" of broadcasting rules by failing to disclose that the narrator of a programme about Gaza was the son of a Hamas official, as ruled by UK media regulator Ofcom.
An investigation by the broadcasting watchdog into Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The head of the BBC had previously apologised, stating there had been "a serious error in relation to factual correctness".
The authority has directed the corporation to transmit a peak-time declaration about its decisions.
"Given this constitutes a significant violation of our rules, we are directing the broadcaster to air a announcement of our findings against it on BBC2 at 21:00, with a date to be confirmed," the statement read.
'Possibility to Undermine Trust'
The authority's report stated: "The inquiry we conducted found that the programme's failure to disclose that the presenter's father served in a post in the Hamas-run authority was significantly deceptive.
"It meant that the public did not have vital facts which may have been highly relevant to their assessment of the presenter and the content he provided.
"Credibility is at the heart of the connection between a media organization and its public, notably for a state-funded media outlet such as the public broadcaster.
"This failing had the risk to undermine the exceptionally strong levels of credibility that audiences would have put in a documentary produced by the BBC about the Israel-Gaza war."
The film was pulled from the BBC's streaming service in the month of February after the boy's familial connections came to light, and in the month of July an internal BBC review concluded it infringed the broadcaster's editorial guidelines on truthfulness.
A representative for the broadcaster stated: "The Ofcom ruling is in line with the conclusions of the internal assessment, that there was a serious error in the film in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to clause 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we accept Ofcom's decision in its entirety. We will follow the directive as soon as the schedule and wording are determined."
