The British broadcaster engaged in a "serious breach" of media regulations by not revealing that the voice of a programme about the Gaza conflict was the son of a Hamas official, as ruled by regulatory body Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the film was "materially misleading".
The BBC's director general had already issued an apology, stating there had been "a major oversight in relation to factual correctness".
Ofcom has instructed the broadcaster to transmit a evening announcement about its decisions.
"As this represents a major infringement of our code, we are directing the BBC to broadcast a announcement of our determinations against it on the BBC's second channel at 21:00, with a timing to be determined," the regulator stated.
'Risk to Undermine Confidence'
The watchdog's statement declared: "Our investigation determined that the documentary's lack of disclosure that the presenter's parent held a position in the Hamas-administered government was substantially inaccurate.
"Consequently that the audience did not have vital facts which may have been extremely pertinent to their assessment of the narrator and the content he presented.
"Trust is at the core of the relationship between a television network and its audience, especially for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the potential to undermine the very considerable degrees of confidence that the public would have placed in a BBC factual programme about the Gaza conflict."
The film was removed from the online platform in February after the presenter's personal associations emerged, and in the month of July an internal BBC review concluded it infringed the corporation's journalistic standards on factual correctness.
A representative for the broadcaster said: "The regulator's decision is in line with the findings of the corporation's inquiry, that there was a major oversight in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to clause 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with the regulator's ruling in complete. We will comply with the directive as soon as the date and wording are finalised."
