The public service broadcaster engaged in a "major breach" of industry standards by not revealing that the narrator of a film about Gaza was the son of a Hamas administrator, as determined by regulatory body Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has concluded that the documentary was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, stating there had been "a major oversight in relation to accuracy".
The regulator has directed the corporation to broadcast a peak-time announcement about its decisions.
"Given this constitutes a major infringement of our regulations, we are instructing the broadcaster to air a announcement of our determinations against it on the BBC's second channel at 9pm, with a schedule to be finalised," the regulator stated.
'Risk to Undermine Credibility'
The regulator's announcement declared: "The inquiry we conducted found that the programme's lack of disclosure that the presenter's parent held a position in the Hamas-controlled administration was substantially inaccurate.
"Consequently that the public did not have vital facts which may have been highly relevant to their evaluation of the voice and the information he provided.
"Trust is at the core of the connection between a media organization and its viewers, notably for a public service broadcaster such as the BBC.
"This error had the possibility to damage the exceptionally strong degrees of confidence that viewers would have put in a factual film from the broadcaster about the conflict in Gaza."
The programme was pulled from the BBC's streaming service in February after the boy's familial connections were revealed, and in July an corporation's own inquiry determined it infringed the organization's content policies on truthfulness.
A representative for the broadcaster commented: "The authority's determination is in agreement with the findings of the corporation's inquiry, that there was a significant failing in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we agree with the regulator's ruling in complete. We will adhere to the directive as soon as the schedule and language are finalised."