The public service broadcaster was found to have committed a "serious breach" of broadcasting rules by omitting to mention that the presenter of a documentary about the Gaza conflict was the son of a Hamas administrator, according to British broadcasting authority Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has concluded that the documentary was "significantly deceptive".
The head of the BBC had earlier expressed regret, stating there had been "a significant failing in relation to factual correctness".
Ofcom has directed the broadcaster to broadcast a evening declaration about its conclusions.
"Given this constitutes a major infringement of our rules, we are ordering the BBC to transmit a statement of our conclusions against it on BBC2 at 21:00, with a timing to be determined," the statement read.
'Potential to Damage Trust'
The authority's announcement said: "Our probe determined that the programme's lack of disclosure that the voice's parent served in a post in the Hamas-controlled government was substantially inaccurate.
"This implied that the viewers did not have vital facts which may have been extremely pertinent to their evaluation of the presenter and the details he shared.
"Trust is at the core of the connection between a broadcaster and its viewers, notably for a national broadcasting corporation such as the BBC.
"This failing had the risk to damage the exceptionally strong amounts of credibility that the public would have invested in a factual film from the broadcaster about the Gaza conflict."
The film was pulled from the BBC's streaming service in February after the boy's familial connections came to light, and in the month of July an corporation's own inquiry determined it infringed the corporation's editorial guidelines on factual correctness.
A corporation official said: "The regulator's decision is in agreement with the results of Peter Johnston's review, that there was a major oversight in the documentary in relation to the BBC's Editorial Guidelines on accuracy, which reflects Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we comply with Ofcom's decision in complete. We will adhere to the penalty as soon as the schedule and wording are finalised."
