The public service broadcaster engaged in a "serious breach" of media regulations by omitting to mention that the narrator of a documentary about the Gaza conflict was the child of a Hamas administrator, as determined by UK media regulator Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The BBC's director general had earlier expressed regret, saying there had been "a serious error in relation to accuracy".
Ofcom has instructed the BBC to transmit a evening statement about its findings.
"As this represents a serious breach of our code, we are instructing the BBC to air a announcement of our conclusions against it on the BBC's second channel at 9pm, with a date to be confirmed," the statement read.
'Possibility to Damage Trust'
The authority's announcement declared: "Our investigation determined that the documentary's omission to reveal that the presenter's father occupied a position in the Hamas-controlled government was substantially inaccurate.
"Consequently that the public did not have critical information which may have been highly relevant to their evaluation of the presenter and the details he provided.
"Trust is at the center of the connection between a broadcaster and its audience, particularly for a public service broadcaster such as the BBC.
"This oversight had the potential to erode the exceptionally strong levels of credibility that viewers would have invested in a documentary produced by the BBC about the Gaza conflict."
The programme was pulled from the BBC's streaming service in the month of February after the presenter's personal associations were revealed, and in July an corporation's own inquiry concluded it infringed the corporation's content policies on accuracy.
A BBC spokesperson stated: "The regulator's decision is in agreement with the findings of the internal assessment, that there was a serious error in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which reflects Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we accept Ofcom's decision in its entirety. We will adhere to the penalty as soon as the date and language are confirmed."
