The public service broadcaster was found to have committed a "major breach" of industry standards by not revealing that the presenter of a film about Gaza was the offspring of a Hamas administrator, 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 documentary was "materially misleading".
The chief executive of the broadcaster had previously apologised, saying there had been "a serious error in relation to truthfulness".
The authority has instructed the corporation to broadcast a prime-time announcement about its findings.
"Given this constitutes a significant violation of our rules, we are directing the corporation to air a announcement of our determinations against it on the BBC's second channel at nine o'clock in the evening, with a schedule to be finalised," it said.
'Possibility to Damage Confidence'
The watchdog's announcement stated: "Our investigation concluded that the programme's omission to reveal that the presenter's male guardian held a role in the Hamas-administered administration was substantially inaccurate.
"Consequently that the public did not have critical information which may have been highly relevant to their evaluation of the presenter and the information he provided.
"Trust is at the core of the connection between a broadcaster and its public, especially for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the risk to damage the significantly high levels of credibility that audiences would have invested in a factual film from the broadcaster about the conflict in Gaza."
The programme was removed from iPlayer in the month of February after the presenter's personal associations emerged, and in this past July an broadcaster's internal assessment determined it infringed the organization's content policies on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in line with the findings of Peter Johnston's review, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on truthfulness, which aligns with Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we accept Ofcom's decision in complete. We will follow the directive as soon as the schedule and wording are finalised."
