The British broadcaster committed a "serious breach" of media regulations by failing to disclose that the presenter of a programme about the Gaza situation was the offspring of a Hamas official, as determined by UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The head of the BBC had earlier expressed regret, stating there had been "a significant failing in relation to factual correctness".
The regulator has ordered the corporation to transmit a prime-time announcement about its decisions.
"Given this constitutes a major infringement of our code, we are directing the corporation to transmit a announcement of our determinations against it on BBC2 at nine o'clock in the evening, with a date to be finalised," the statement read.
'Potential to Damage Confidence'
The watchdog's announcement said: "Our investigation found that the film's failure to disclose that the voice's male guardian held a role in the Hamas-administered administration was significantly deceptive.
"This implied that the viewers did not have critical information which may have been highly relevant to their assessment of the presenter and the content he provided.
"Credibility is at the center of the relationship between a television network and its audience, particularly for a state-funded media outlet such as the BBC.
"This oversight had the risk to erode the very considerable amounts of trust that viewers would have placed in a BBC factual programme about the Israel-Gaza war."
The film was removed from iPlayer in last February after the boy's family links were revealed, and in July an internal BBC review concluded it violated the broadcaster's editorial guidelines on accuracy.
A representative for the broadcaster commented: "The Ofcom ruling is in agreement with the conclusions of Peter Johnston's review, that there was a major oversight in the programme in relation to the corporation's content standards on accuracy, which reflects clause 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we accept the authority's determination in full. We will comply with the penalty as soon as the timing and wording are determined."
