The phrase "acknowledged testimony" is correct and usable in written English.
It can be used in contexts where someone recognizes or validates the statements or evidence provided by a witness or participant.
Example: "The court accepted the acknowledged testimony of the expert witness as credible evidence in the case."
Alternatives: "recognized testimony" or "validated testimony".
That was acknowledged in testimony by Ms Yellen.
The rights group acknowledged erroneous testimony in the report but said Tuesday that it stood by the report's broader conclusions.
Even Interior Minister Rashid G. Nurgaliyev acknowledged in testimony to Parliament last week that checks had revealed that many senior police officials had inexplicably acquired expensive real estate.
Ms. Brooks acknowledged in testimony before Parliament in 2003 that the newspaper paid police officers for information, a practice that Mr. Coulson described as being "within the law".
The E.P.A. administrator, Christie Whitman, acknowledged in testimony to a skeptical Appropriations subcommittee this week that "we are writing the book as we go along".
Mr. Stumpf acknowledged in testimony before the Senate last week that Wells Fargo officials knew about the practice far longer than they had initially stated.
Still, several detainees acknowledged in testimony that their encampment in Afghanistan had ties to a Uighur expatriate, Hasan Mahsum, who described himself as the leader of the separatist ETIM.
Administration officials did not say how the report related to intelligence analysis of the Middle East, which the director of the Central Intelligence Agency, Leon E. Panetta, acknowledged in testimony before Congress, needed to better identify "triggers" for uprisings in countries like Egypt.
It claims intelligence reports to Mr Bush had given warning of a potentially catastrophic terrorist attack against American targets (warnings that were later acknowledged in testimony by Colin Powell, the secretary of state, and Donald Rumsfeld, the secretary of defence).
