The BBC was found to have committed a "major breach" of industry standards by not revealing that the presenter of a programme about the Gaza situation was the offspring of a Hamas administrator, as ruled by UK media regulator Ofcom.
An investigation by the media regulator into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The head of the BBC had earlier expressed regret, stating there had been "a significant failing in relation to accuracy".
The authority has directed the corporation to air a evening statement about its conclusions.
"Given this constitutes a significant violation of our rules, we are ordering the BBC to transmit a announcement of our conclusions against it on the BBC's second channel at 21:00, with a timing to be confirmed," the statement read.
'Potential to Erode Credibility'
The authority's announcement stated: "Our investigation found that the film's omission to reveal that the voice's male guardian occupied a role in the Hamas-administered government was substantially inaccurate.
"It meant that the viewers did not have essential details which may have been extremely pertinent to their judgment of the narrator and the details he provided.
"Credibility is at the heart of the connection between a television network and its viewers, especially for a state-funded media outlet such as the public broadcaster.
"This failing had the potential to erode the significantly high levels of confidence that viewers would have placed in a factual film from the broadcaster about the conflict in Gaza."
The documentary was pulled from the online platform in last February after the presenter's personal associations came to light, and in this past July an broadcaster's internal assessment concluded it violated the corporation's editorial guidelines on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in line with the conclusions of the internal assessment, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on accuracy, which corresponds to regulation 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we agree with the authority's determination in its entirety. We will comply with the sanction as soon as the schedule and wording are confirmed."
