The BBC was found to have committed a "serious breach" of broadcasting rules by omitting to mention that the voice of a programme about the Gaza situation was the offspring of a Hamas representative, as ruled by regulatory body Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, stating there had been "a significant failing in relation to factual correctness".
The authority has ordered the broadcaster to broadcast a prime-time statement about its decisions.
"As this represents a significant violation of our regulations, we are instructing the corporation to broadcast a message of our determinations against it on BBC2 at 21:00, with a timing to be confirmed," it said.
'Risk to Damage Credibility'
The authority's announcement declared: "Our probe determined that the documentary's failure to disclose that the narrator's father served in a role in the Hamas-run administration was materially misleading.
"It meant that the viewers did not have critical information which may have been highly relevant to their judgment of the presenter and the details he provided.
"Confidence is at the core of the connection between a media organization and its viewers, especially for a public service broadcaster such as the public broadcaster.
"This oversight had the potential to erode the exceptionally strong degrees of credibility that viewers would have invested in a factual film from the broadcaster about the Gaza conflict."
The documentary was removed from the online platform in last February after the narrator's familial connections emerged, and in this past July an internal BBC review determined it infringed the organization's journalistic standards on truthfulness.
A representative for the broadcaster commented: "The regulator's decision is in accordance with the findings of the internal assessment, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on accuracy, which reflects clause 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with Ofcom's decision in full. We will comply with the sanction as soon as the schedule and language are confirmed."
