The British 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 son of a Hamas official, as determined by regulatory body Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, saying there had been "a major oversight in relation to factual correctness".
Ofcom has ordered the BBC to transmit a evening announcement about its findings.
"Given this constitutes a serious breach of our rules, we are directing the corporation to broadcast a announcement of our findings against it on BBC Two at nine o'clock in the evening, with a schedule to be determined," the statement read.
'Potential to Damage Trust'
The regulator's report stated: "The inquiry we conducted determined that the programme's lack of disclosure that the narrator's parent served in a post in the Hamas-run government was materially misleading.
"Consequently that the public did not have critical information which may have been highly relevant to their evaluation of the presenter and the information he shared.
"Credibility is at the heart of the bond between a broadcaster and its viewers, especially for a public service broadcaster such as the public broadcaster.
"This oversight had the possibility to damage the very considerable degrees of credibility that the public would have put in a BBC factual programme about the conflict in Gaza."
The film was pulled from iPlayer in the month of February after the narrator's family links emerged, and in the month of July an internal BBC review found it violated the corporation's journalistic standards on accuracy.
A BBC spokesperson said: "The Ofcom ruling is in agreement with the results of the corporation's inquiry, that there was a serious error in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which aligns with regulation 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we comply with the regulator's ruling in its entirety. We will follow the penalty as soon as the date and wording are confirmed."
