The British broadcaster committed a "significant breach" of media regulations by omitting to mention that the narrator of a documentary about Gaza was the son of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An investigation by the broadcasting watchdog into Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a major oversight in relation to truthfulness".
Ofcom has instructed the BBC to transmit a peak-time announcement about its decisions.
"As this represents a serious breach of our rules, we are directing the BBC to air a message of our determinations against it on the BBC's second channel at 9pm, with a schedule to be determined," the statement read.
'Possibility to Damage Trust'
The watchdog's report said: "Our investigation concluded that the programme's failure to disclose that the narrator's father served in a post in the Hamas-administered authority was materially misleading.
"This implied that the public did not have essential details which may have been highly relevant to their judgment of the voice and the content he presented.
"Trust is at the heart of the connection between a broadcaster and its audience, particularly for a state-funded media outlet such as the public broadcaster.
"This failing had the possibility to undermine the very considerable amounts of trust that viewers would have invested in a factual film from the broadcaster about the conflict in Gaza."
The programme was removed from the online platform in the month of February after the presenter's personal associations emerged, and in the month of July an corporation's own inquiry concluded it breached the corporation's content policies on factual correctness.
A BBC spokesperson stated: "The authority's determination is in agreement with the results of the internal assessment, that there was a major oversight in the documentary in relation to the broadcaster's journalistic policies on truthfulness, which aligns with clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept the regulator's ruling in its entirety. We will comply with the penalty as soon as the timing and wording are confirmed."
