The British broadcaster engaged in a "serious breach" of broadcasting rules by failing to disclose that the presenter of a programme about the Gaza situation was the son of a Hamas representative, as ruled by regulatory body Ofcom.
An inquiry by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The BBC's director general had previously apologised, noting there had been "a major oversight in relation to truthfulness".
The authority has ordered the BBC to broadcast a prime-time statement about its decisions.
"Given this constitutes a significant violation of our rules, we are directing the broadcaster to air a statement of our determinations against it on BBC Two at 9pm, with a timing to be finalised," the statement read.
'Potential to Damage Confidence'
The watchdog's announcement said: "Our probe concluded that the programme's omission to reveal that the voice's parent held a post in the Hamas-administered administration was substantially inaccurate.
"It meant that the public did not have vital facts which may have been very significant to their judgment of the voice and the content he provided.
"Confidence is at the core of the relationship between a television network and its viewers, notably for a state-funded media outlet such as the public broadcaster.
"This error had the potential to erode the exceptionally strong levels of trust that audiences would have put in a BBC factual programme about the conflict in Gaza."
The programme was withdrawn from iPlayer in the month of February after the boy's personal associations came to light, and in this past July an corporation's own inquiry concluded it breached the broadcaster's journalistic standards on factual correctness.
A representative for the broadcaster said: "The authority's determination is in agreement with the conclusions of the internal assessment, that there was a major oversight in the programme in relation to the corporation's content standards on truthfulness, which aligns with clause 2.2 of the regulator's media standards.
"We have apologised for this and we agree with Ofcom's decision in its entirety. We will follow the penalty as soon as the timing and wording are determined."
