The British broadcaster was found to have committed a "serious breach" of broadcasting rules by not revealing that the presenter of a documentary about Gaza was the child of a Hamas administrator, as determined by British broadcasting authority Ofcom.
An inquiry by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the documentary was "materially misleading".
The BBC's director general had previously apologised, saying there had been "a serious error in relation to accuracy".
The regulator has directed the corporation to transmit a evening announcement about its conclusions.
"As this represents a serious breach of our code, we are instructing the corporation to broadcast a message of our conclusions against it on the BBC's second channel at 9pm, with a timing to be finalised," the regulator stated.
The authority's statement said: "Our probe found that the documentary's failure to disclose that the narrator's father occupied a role in the Hamas-controlled administration was significantly deceptive.
"Consequently that the public did not have essential details which may have been extremely pertinent to their evaluation of the presenter and the details he provided.
"Trust is at the heart of the bond between a broadcaster and its audience, particularly for a state-funded media outlet such as the BBC.
"This error had the possibility to damage the very considerable degrees of credibility that audiences would have invested in a factual film from the broadcaster about the Israel-Gaza war."
The documentary was removed from the online platform in the month of February after the presenter's personal associations came to light, and in July an broadcaster's internal assessment determined it violated the broadcaster's editorial guidelines on factual correctness.
A corporation official commented: "The Ofcom ruling is in agreement with the results of the corporation's inquiry, that there was a significant failing in the programme in relation to the broadcaster's journalistic policies on accuracy, which reflects Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with Ofcom's decision in complete. We will adhere to the directive as soon as the date and wording are determined."