The public service broadcaster engaged in a "major breach" of broadcasting rules by omitting to mention that the narrator of a film about the Gaza conflict was the child of a Hamas official, as ruled by UK media regulator Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The BBC's director general had earlier expressed regret, stating there had been "a significant failing in relation to factual correctness".
Ofcom has instructed the broadcaster to transmit a evening announcement about its decisions.
"Given this constitutes a serious breach of our code, we are directing the broadcaster to broadcast a announcement of our findings against it on BBC2 at 21:00, with a date to be finalised," the statement read.
'Possibility to Damage Confidence'
The watchdog's announcement said: "Our investigation concluded that the programme's omission to reveal that the presenter's parent held a post in the Hamas-controlled government was significantly deceptive.
"Consequently that the viewers did not have critical information which may have been highly relevant to their assessment of the voice and the information he provided.
"Confidence is at the core of the bond between a media organization and its public, especially for a public service broadcaster such as the public broadcaster.
"This oversight had the risk to erode the very considerable degrees of trust that viewers would have put in a BBC factual programme about the Israel-Gaza war."
The programme was pulled from the online platform in the month of February after the narrator's familial connections emerged, and in this past July an broadcaster's internal assessment concluded it infringed the corporation's journalistic standards on factual correctness.
A representative for the broadcaster commented: "The Ofcom ruling is in accordance with the findings of the internal assessment, that there was a major oversight in the documentary in relation to the BBC's Editorial Guidelines on accuracy, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with the authority's determination in full. We will adhere to the directive as soon as the schedule and language are finalised."