The BBC committed a "major breach" of industry standards by omitting to mention that the narrator of a documentary about the Gaza situation was the offspring of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "materially misleading".
The head of the BBC had earlier expressed regret, saying there had been "a serious error in relation to accuracy".
Ofcom has directed the corporation to transmit a evening statement about its conclusions.
"Since this amounts to a major infringement of our rules, we are ordering the broadcaster to air a announcement of our conclusions against it on BBC Two at nine o'clock in the evening, with a schedule to be confirmed," the regulator stated.
'Potential to Undermine Trust'
The authority's report declared: "The inquiry we conducted determined that the film's failure to disclose that the voice's father held a role in the Hamas-controlled government was significantly deceptive.
"It meant that the viewers did not have vital facts which may have been extremely pertinent to their evaluation of the narrator and the details he provided.
"Confidence is at the heart of the relationship between a television network and its public, especially for a national broadcasting corporation such as the BBC.
"This error had the potential to erode the exceptionally strong levels of confidence that viewers would have put in a BBC factual programme about the Israel-Gaza war."
The programme was withdrawn from the online platform in last February after the presenter's personal associations came to light, and in this past July an internal BBC review found it breached the broadcaster's content policies on truthfulness.
A representative for the broadcaster said: "The Ofcom ruling is in agreement with the conclusions of the internal assessment, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to regulation 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with Ofcom's decision in its entirety. We will comply with the sanction as soon as the date and wording are confirmed."
