The public service broadcaster committed a "significant breach" of industry standards by omitting to mention that the presenter of a programme about the Gaza conflict was the offspring of a Hamas representative, as determined by UK media regulator Ofcom.
An probe by the media regulator into the documentary titled Gaza: How to Survive a Warzone has concluded that the programme was "materially misleading".
The BBC's director general had earlier expressed regret, noting there had been "a significant failing in relation to factual correctness".
The authority has directed the corporation to broadcast a prime-time declaration about its conclusions.
"Since this amounts to a significant violation of our rules, we are directing the broadcaster to air a statement of our conclusions against it on BBC2 at 21:00, with a timing to be determined," the statement read.
'Risk to Erode Trust'
The regulator's report declared: "The inquiry we conducted found that the programme's lack of disclosure that the narrator's male guardian served in a role in the Hamas-run administration was substantially inaccurate.
"Consequently that the public did not have essential details which may have been highly relevant to their evaluation of the presenter and the details he presented.
"Confidence is at the core of the relationship between a broadcaster and its public, particularly for a state-funded media outlet such as the BBC.
"This failing had the possibility to damage the very considerable amounts of confidence that viewers would have invested in a factual film from the broadcaster about the Gaza conflict."
The programme was removed from iPlayer in last February after the boy's family links were revealed, and in the month of July an corporation's own inquiry found it breached the broadcaster's content policies on factual correctness.
A corporation official commented: "The Ofcom ruling is in line with the findings of the corporation's inquiry, that there was a major oversight in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which reflects regulation 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we comply with the authority's determination in its entirety. We will adhere to the penalty as soon as the schedule and wording are confirmed."
