The public service broadcaster was found to have committed a "serious breach" of media regulations by omitting to mention that the narrator of a programme about the Gaza conflict was the offspring of a Hamas official, according to British broadcasting authority Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the programme was "significantly deceptive".
The BBC's director general had previously apologised, noting there had been "a significant failing in relation to truthfulness".
Ofcom has ordered the broadcaster to air a evening statement about its conclusions.
"Since this amounts to a major infringement of our rules, we are directing the corporation to transmit a statement of our conclusions against it on the BBC's second channel at 9pm, with a schedule to be confirmed," the statement read.
'Possibility to Undermine Credibility'
The regulator's statement said: "Our investigation concluded that the programme's lack of disclosure that the presenter's parent occupied a role in the Hamas-administered government was materially misleading.
"It meant that the viewers did not have vital facts which may have been extremely pertinent to their evaluation of the voice and the information he presented.
"Credibility is at the core of the bond between a media organization and its audience, notably for a public service broadcaster such as the BBC.
"This error had the risk to erode the exceptionally strong levels of credibility that audiences would have placed in a BBC factual programme about the Israel-Gaza war."
The programme was removed from the BBC's streaming service in last February after the narrator's familial connections were revealed, and in this past July an corporation's own inquiry concluded it breached the corporation's editorial guidelines on truthfulness.
A representative for the broadcaster commented: "The Ofcom ruling is in accordance with the findings of the internal assessment, that there was a major oversight in the film in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with the authority's determination in complete. We will comply with the penalty as soon as the timing and language are confirmed."
