The British broadcaster committed a "significant breach" of broadcasting rules by omitting to mention that the presenter of a programme about the Gaza situation was the offspring of a Hamas official, as ruled by regulatory body Ofcom.
An probe by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had already issued an apology, saying there had been "a major oversight in relation to factual correctness".
Ofcom has instructed the broadcaster to broadcast a prime-time announcement about its decisions.
"Given this constitutes a major infringement of our regulations, we are directing the corporation to transmit a message of our findings against it on BBC2 at 21:00, with a schedule to be finalised," it said.
'Possibility to Erode Credibility'
The authority's report declared: "Our investigation concluded that the documentary's lack of disclosure that the presenter's male guardian held a post in the Hamas-administered authority was significantly deceptive.
"Consequently that the audience did not have vital facts which may have been very significant to their evaluation of the voice and the content he presented.
"Credibility is at the core of the connection between a media organization and its viewers, especially for a national broadcasting corporation such as the BBC.
"This error had the possibility to damage the significantly high levels of confidence that audiences would have put in a BBC factual programme about the Gaza conflict."
The programme was removed from the BBC's streaming service in the month of February after the presenter's personal associations came to light, and in this past July an corporation's own inquiry determined it breached the broadcaster's content policies on truthfulness.
A corporation official commented: "The regulator's decision is in agreement with the results of the corporation's inquiry, that there was a major oversight in the film in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to regulation 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we accept Ofcom's decision in its entirety. We will follow the sanction as soon as the schedule and wording are finalised."
