The public service broadcaster engaged in a "major breach" of industry standards by omitting to mention that the voice of a documentary about the Gaza situation was the child of a Hamas representative, as ruled by regulatory body Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had earlier expressed regret, saying there had been "a serious error in relation to factual correctness".
The regulator has ordered the BBC to broadcast a peak-time announcement about its conclusions.
"Given this constitutes a serious breach of our code, we are directing the corporation to transmit a statement of our determinations against it on BBC2 at 21:00, with a schedule to be confirmed," the statement read.
'Potential to Damage Confidence'
The regulator's report stated: "The inquiry we conducted determined that the documentary's lack of disclosure that the presenter's parent served in a role in the Hamas-run authority was substantially inaccurate.
"It meant that the public did not have critical information which may have been highly relevant to their judgment of the narrator and the details he provided.
"Trust is at the center 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 possibility to erode the significantly high degrees of trust that audiences would have invested in a factual film from the broadcaster about the Israel-Gaza war."
The programme was pulled from the BBC's streaming service in last February after the boy's familial connections came to light, and in July an corporation's own inquiry found it violated the organization's journalistic standards on factual correctness.
A representative for the broadcaster stated: "The regulator's decision is in accordance with the results of Peter Johnston's review, that there was a significant failing in the documentary in relation to the broadcaster's journalistic policies on factual correctness, which reflects Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept Ofcom's decision in complete. We will follow the penalty as soon as the timing and wording are determined."
