The British broadcaster was found to have committed a "major breach" of industry standards by omitting to mention that the narrator of a film about Gaza was the child of a Hamas official, according to British broadcasting authority Ofcom.
An inquiry by the broadcasting watchdog into Gaza: How to Survive a Warzone has found that the documentary was "substantially inaccurate".
The head of the BBC had previously apologised, noting there had been "a significant failing in relation to factual correctness".
Ofcom has ordered the broadcaster to transmit a evening statement about its decisions.
"As this represents a major infringement of our regulations, we are instructing the corporation to air a announcement of our determinations against it on BBC2 at 9pm, with a timing to be confirmed," it said.
'Risk to Damage Credibility'
The authority's statement declared: "The inquiry we conducted found that the film's omission to reveal that the voice's male guardian served in a position in the Hamas-administered administration was materially misleading.
"It meant that the audience did not have critical information which may have been highly relevant to their evaluation of the narrator and the content he presented.
"Confidence is at the core of the connection between a television network and its audience, notably for a state-funded media outlet such as the public broadcaster.
"This error had the potential to damage the very considerable levels of trust that the public would have placed in a documentary produced by the BBC about the conflict in Gaza."
The programme was pulled from the BBC's streaming service in the month of February after the presenter's familial connections were revealed, and in this past July an internal BBC review found it infringed the organization's journalistic standards on truthfulness.
A corporation official commented: "The authority's determination is in agreement with the results of Peter Johnston's review, that there was a serious error in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which reflects clause 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we comply with the regulator's ruling in full. We will adhere to the directive as soon as the schedule and wording are determined."
