The British broadcaster was found to have committed a "serious breach" of industry standards 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 inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the film was "substantially inaccurate".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a major oversight in relation to accuracy".
The regulator has instructed the corporation to transmit a prime-time declaration about its conclusions.
"Since this amounts to a major infringement of our rules, we are instructing the corporation to broadcast a statement of our findings against it on the BBC's second channel at 9pm, with a timing to be determined," the statement read.
'Possibility to Erode Confidence'
The authority's report said: "Our investigation found that the programme's lack of disclosure that the presenter's father served in a position in the Hamas-administered government was significantly deceptive.
"This implied that the public did not have vital facts which may have been extremely pertinent to their judgment of the presenter and the details he provided.
"Trust is at the heart of the relationship between a media organization and its public, notably for a national broadcasting corporation such as the public broadcaster.
"This oversight had the risk to erode the exceptionally strong amounts of trust that the public would have put in a BBC factual programme about the Gaza conflict."
The documentary was pulled from iPlayer in last February after the narrator's family links came to light, and in the month of July an internal BBC review determined it infringed the organization's content policies on accuracy.
A representative for the broadcaster said: "The Ofcom ruling is in line with the results of the internal assessment, that there was a significant failing in the film in relation to the BBC's Editorial Guidelines on accuracy, which aligns with clause 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we comply with the authority's determination in its entirety. We will comply with the penalty as soon as the schedule and wording are finalised."
