The public service broadcaster was found to have committed a "major breach" of media regulations by failing to disclose that the voice of a documentary about the Gaza conflict was the son of a Hamas representative, as ruled by UK media regulator Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The head of the BBC had previously apologised, saying there had been "a major oversight in relation to truthfulness".
The regulator has ordered the BBC to air a peak-time declaration about its conclusions.
"Since this amounts to a major infringement of our code, we are instructing the broadcaster to broadcast a statement of our conclusions against it on BBC Two at 21:00, with a timing to be confirmed," the statement read.
'Possibility to Erode Confidence'
The authority's report stated: "The inquiry we conducted found that the documentary's lack of disclosure that the voice's father occupied a post in the Hamas-administered authority was significantly deceptive.
"It meant that the audience did not have critical information which may have been highly relevant to their assessment of the voice and the information he shared.
"Trust is at the center of the relationship between a broadcaster and its public, notably for a public service broadcaster such as the BBC.
"This error had the potential to undermine the very considerable degrees of confidence that the public would have placed in a documentary produced by the BBC about the conflict in Gaza."
The programme was pulled from iPlayer in the month of February after the presenter's familial connections came to light, and in this past July an corporation's own inquiry found it breached the corporation's editorial guidelines on truthfulness.
A corporation official stated: "The authority's determination is in accordance with the conclusions of Peter Johnston's review, that there was a major oversight in the film in relation to the broadcaster's journalistic policies on truthfulness, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we agree with the regulator's ruling in complete. We will comply with the directive as soon as the date and wording are determined."
