The public service broadcaster engaged in a "major breach" of industry standards by not revealing that the voice of a film about the Gaza conflict was the child of a Hamas administrator, as determined by UK media regulator Ofcom.
An inquiry by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the documentary was "significantly deceptive".
The head of the BBC had previously apologised, stating there had been "a serious error in relation to factual correctness".
Ofcom has instructed the broadcaster to air a evening statement about its findings.
"Since this amounts to a major infringement of our rules, we are ordering the corporation to air a announcement of our findings against it on the BBC's second channel at 9pm, with a timing to be determined," the statement read.
'Possibility to Damage Credibility'
The regulator's report stated: "The inquiry we conducted determined that the documentary's lack of disclosure that the voice's male guardian occupied a position in the Hamas-controlled administration was substantially inaccurate.
"It meant that the audience did not have essential details which may have been extremely pertinent to their assessment of the presenter and the content he provided.
"Confidence is at the core of the connection between a media organization and its public, particularly for a public service broadcaster such as the public broadcaster.
"This error had the potential to undermine the exceptionally strong levels of confidence that viewers would have placed in a BBC factual programme about the Gaza conflict."
The film was withdrawn from the online platform in February after the narrator's family links came to light, and in the month of July an broadcaster's internal assessment concluded it violated the broadcaster's editorial guidelines on accuracy.
A BBC spokesperson commented: "The Ofcom ruling is in agreement with the conclusions of Peter Johnston's review, that there was a serious error in the documentary in relation to the corporation's content standards on accuracy, which corresponds to clause 2.2 of the regulator's media standards.
"We issued an apology for this and we comply with Ofcom's decision in complete. We will comply with the sanction as soon as the schedule and wording are determined."
