The British broadcaster engaged in a "significant breach" of industry standards by omitting to mention that the voice of a programme about the Gaza conflict was the offspring of a Hamas representative, as determined by UK media regulator Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The head of the BBC had already issued an apology, saying there had been "a major oversight in relation to truthfulness".
Ofcom has ordered the broadcaster to air a prime-time declaration about its conclusions.
"Since this amounts to a serious breach of our code, we are directing the broadcaster to transmit a announcement of our conclusions against it on BBC Two at 9pm, with a timing to be finalised," the statement read.
'Possibility to Damage Confidence'
The authority's announcement said: "Our probe determined that the film's lack of disclosure that the narrator's father held a position in the Hamas-run administration was substantially inaccurate.
"Consequently that the public did not have critical information which may have been extremely pertinent to their evaluation of the presenter and the information he shared.
"Trust is at the core of the relationship between a broadcaster and its public, notably for a national broadcasting corporation such as the public broadcaster.
"This oversight had the potential to damage the significantly high degrees of trust that audiences would have placed in a documentary produced by the BBC about the Gaza conflict."
The film was withdrawn from the online platform in the month of February after the narrator's familial connections were revealed, and in the month of July an corporation's own inquiry determined it infringed the broadcaster's content policies on truthfulness.
A corporation official commented: "The Ofcom ruling is in agreement with the conclusions of the internal assessment, that there was a serious error in the documentary in relation to the BBC's Editorial Guidelines on accuracy, which reflects regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we accept Ofcom's decision in its entirety. We will comply with the directive as soon as the date and wording are finalised."
