The BBC was found to have committed a "serious breach" of industry standards by omitting to mention that the voice of a film about Gaza was the child of a Hamas administrator, as determined by UK media regulator Ofcom.
An inquiry by the broadcasting watchdog into Gaza: How to Survive a Warzone has found that the film was "substantially inaccurate".
The head of the BBC had previously apologised, saying there had been "a major oversight in relation to accuracy".
Ofcom has directed the broadcaster to transmit a evening statement about its findings.
"As this represents a major infringement of our regulations, we are ordering the BBC to air a announcement of our findings against it on BBC Two at 9pm, with a date to be determined," it said.
'Risk to Erode Credibility'
The watchdog's statement said: "The inquiry we conducted determined that the programme's omission to reveal that the presenter's parent occupied a post in the Hamas-controlled authority was significantly deceptive.
"Consequently that the public did not have vital facts which may have been extremely pertinent to their assessment of the voice and the content he presented.
"Credibility is at the heart of the bond between a broadcaster and its viewers, especially for a national broadcasting corporation such as the public broadcaster.
"This error had the possibility to damage the exceptionally strong amounts of confidence that audiences would have invested in a documentary produced by the BBC about the Gaza conflict."
The documentary was pulled from iPlayer in last February after the presenter's personal associations came to light, and in the month of July an broadcaster's internal assessment concluded it breached the organization's content policies on truthfulness.
A representative for the broadcaster stated: "The authority's determination is in accordance with the findings of the corporation's inquiry, that there was a serious error in the film in relation to the BBC's Editorial Guidelines on truthfulness, which aligns with regulation 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with Ofcom's decision in complete. We will follow the penalty as soon as the date and wording are finalised."
