The British broadcaster was found to have committed a "serious breach" of media regulations by failing to disclose that the presenter of a programme about the Gaza conflict was the son of a Hamas representative, according to UK media regulator Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The BBC's director general had earlier expressed regret, stating there had been "a serious error in relation to factual correctness".
The regulator has directed the corporation to broadcast a peak-time statement about its findings.
"As this represents a significant violation of our code, we are ordering the broadcaster to broadcast a statement of our determinations against it on the BBC's second channel at 21:00, with a date to be finalised," the regulator stated.
'Potential to Erode Credibility'
The authority's report said: "Our probe concluded that the programme's failure to disclose that the presenter's parent served in a post in the Hamas-run authority was materially misleading.
"This implied that the public did not have vital facts which may have been extremely pertinent to their evaluation of the voice and the information he shared.
"Trust is at the core of the relationship between a media organization and its viewers, notably for a national broadcasting corporation such as the BBC.
"This oversight had the risk to damage the exceptionally strong degrees of confidence that the public would have placed in a factual film from the broadcaster about the Israel-Gaza war."
The documentary was removed from iPlayer in last February after the presenter's familial connections emerged, and in July an corporation's own inquiry determined it breached the organization's content policies on truthfulness.
A BBC spokesperson said: "The authority's determination is in line with the findings of Peter Johnston's review, that there was a significant failing in the film in relation to the BBC's Editorial Guidelines on accuracy, which reflects regulation 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we agree with the authority's determination in complete. We will adhere to the sanction as soon as the schedule and wording are determined."
