The BBC committed a "significant breach" of industry standards by failing to disclose that the presenter of a programme about the Gaza conflict was the child of a Hamas official, according to regulatory body Ofcom.
An investigation by the media regulator into Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The BBC's director general had already issued an apology, stating there had been "a major oversight in relation to factual correctness".
Ofcom has directed the broadcaster to transmit a evening announcement about its decisions.
"As this represents a major infringement of our code, we are ordering the BBC to broadcast a statement of our determinations against it on BBC2 at 9pm, with a timing to be determined," the regulator stated.
'Possibility to Erode Trust'
The authority's report said: "Our investigation concluded that the documentary's lack of disclosure that the narrator's father held a position in the Hamas-administered government was substantially inaccurate.
"This implied that the viewers did not have essential details which may have been highly relevant to their assessment of the presenter and the details he presented.
"Confidence is at the core of the bond between a broadcaster and its viewers, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This oversight had the risk to erode the significantly high degrees of trust that the public would have put in a BBC factual programme about the conflict in Gaza."
The film was pulled from iPlayer in the month of February after the presenter's personal associations came to light, and in the month of July an broadcaster's internal assessment determined it infringed the organization's journalistic standards on factual correctness.
A representative for the broadcaster stated: "The regulator's decision is in accordance with the conclusions of the internal assessment, that there was a significant failing in the programme in relation to the corporation's content standards on factual correctness, which corresponds to Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we comply with Ofcom's decision in full. We will adhere to the penalty as soon as the timing and wording are finalised."
