The BBC engaged in a "major breach" of industry standards by failing to disclose that the voice of a documentary about Gaza was the son of a Hamas official, as ruled by regulatory body Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The head of the BBC had earlier expressed regret, noting there had been "a significant failing in relation to truthfulness".
The authority has ordered the BBC to transmit a evening statement about its conclusions.
"Given this constitutes a serious breach of our rules, we are directing the BBC to air a announcement of our conclusions against it on BBC Two at 9pm, with a timing to be determined," the statement read.
'Risk to Damage Confidence'
The authority's report declared: "Our probe determined that the film's failure to disclose that the narrator's parent held a post in the Hamas-controlled government was materially misleading.
"It meant that the public did not have critical information which may have been extremely pertinent to their assessment of the narrator and the content he provided.
"Credibility is at the heart of the relationship between a broadcaster and its viewers, especially for a public service broadcaster such as the public broadcaster.
"This oversight had the potential to undermine the very considerable degrees of confidence that audiences would have invested in a BBC factual programme about the Gaza conflict."
The documentary was removed from the online platform in the month of February after the boy's familial connections were revealed, and in July an internal BBC review determined it violated the organization's content policies on truthfulness.
A BBC spokesperson stated: "The authority's determination is in line with the conclusions of the internal assessment, that there was a major oversight in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which reflects clause 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with the regulator's ruling in full. We will comply with the sanction as soon as the timing and wording are determined."
