Former Trump Organization comptroller Jeff McConney broke down on the witness stand during his testimony for the defense, saying that it's "just really frustrating" to have his decades of accounting work called into question by investigators.

McConney said he felt proud of his years at the Trump Organization and testified that he "felt comfortable" with his contributions to Trump's statements of financial condition that are at the center of the case.

"I feel proud of what I did. Numbers don't represent fully what these assets are worth," McConney said.

He threw up his hands and choked up after defense attorney Jesus Suarez asked him why he no longer worked at the Trump Organization. McConney ticked off the list of subpoenas, depositions and investigations he has been part of, and said "I just couldn't do it anymore."

McConney described working at the Trump Organization as being like working with family, and said he "got to do a lot of things that a normal accountant wouldn't be able to do," like takes trips to Atlantic City, attend coworkers' weddings and work on "The Apprentice."

"I just wanted to relax and stop being accused of misrepresenting assets of the company I've been working for," McConney said. "To be hit with a negative comment every time is just really frustrating."

McConney briefly held his head down, wiped his eyes and quietly sobbed. "I'm sorry," he said.

"Mr. McConney, you OK or you need a couple of minutes?" Judge Arthur Engoron asked.

McConney declined to take a break.

Longtime Trump Organization controller Jeffrey McConney, in response to the New York attorney general's allegations that the Trump Organization ignored multiple appraisals that would have significantly decreased the value of their assets, testified that some appraisals had specific purposes outside of valuing properties.

"They are done for a specific purpose," McConney said, acknowledging that some appraisals valued overall properties while others were specifically ordered for limited tax purposes.

"Just because an appraisal was done, does not mean it reflects the value of that property," McConney said, explaining that appraisals related to conservation easements were "not done to value the property."

McConney appeared to acknowledge that the Trump Organization choose to ignore a 2015 appraisal that valued its 40 Wall Street property at $540 million, while Trump valued the property in his financial statement at $735 million.

"We didn't think this valuation property reflected what the building was worth," McConney said.

Asked if the Trump Organization provided the appraisal to their outside accountant Donald Bender of Mazars USA, McConney responded, "If he wanted them, he could have had them."

Former Trump Organization controller and co-defendant Jeffrey McConney is set to return to the witness stand to conclude his testimony this morning.

When he returned to the stand as a witness for the defense yesterday, he testified that he relied on the firm's accountants at Mazars USA to put together the statements of financial condition that are at the center of the case, continuing what appears to be the defense's strategy of placing responsibility on outside accountants.

"Whatever he asked for, we would do," McConney said of longtime Mazars accountant Donald Bender.

McConney is the only witness scheduled to testify before the court takes an extended Thanksgiving break. Once his testimony concludes, the court is set to adjourn until it resumes on Monday following the holiday.

The Trump Organization's longtime controller testified that he overvalued Ivanka Trump's apartment in her father's statement of financial condition before correcting the mistake after it was flagged.

New York Attorney General Letitia James alleges that a penthouse apartment rented by Ivanka Trump was valued in Donald Trump's financial statement at $45 million in 2014 and 2015, despite the apartment's rental agreement including an option to purchase the apartment for $14 million.

From 2016 onward, the value of the penthouse in Trump's statements dropped back down the actual buyout price of $14 million, "per rental agreement."

Asked about the change during his testimony today, McConney acknowledged the correction, claiming he did not know about the provision in the rental agreement.

McConney said that once outside accountant Donald Bender of Mazars USA flagged the issue, he promptly made the change in Trump's financial statement.

McConney concluded his testimony for the day and is set to return to the witness stand Tuesday morning.

Prosecutors intend to prove in the coming months that "each defendant engaged in repeated, persistent, illegal acts in conduct of business," according to the opening statement from Kevin Wallace of the attorney general's office.

Referring to Judge Engoron's partial summary judgment last week, Wallace said that "the people have already proven" that former President Trump used "false, misleading" statements that were "repeatedly [and] persistently used in the conduct of business."

But prosecutors will further demonstrate that Trump and his co-defendants knew those statements were false and continued to peddle them anyway in furtherance of their alleged scheme, Wallace told the judge.

"The defendants were lying year after year," he said.

Wallace played clips of video depositions to punctuate his remarks, including testimony from Trump himself, as well as Eric Trump and former Trump attorney Michael Cohen -- whose congressional testimony years ago precipitated the state's investigation and some of the key allegations underpinning their case.

"The goal was to use each of [Trump's] assets and increase its value in order to get to the end result number," Cohen said during his taped deposition. "It was essentially backing in numbers to each of the asset classes in order to attain the number that President Trump wanted."

Trump and his co-defendants "knew that a high net worth was necessary to get and maintain certain financial benefits," Wallace said, pointing to basic principles of accounting and finance.

Throughout Wallace's remarks, the attorney general's office flashed graphics on television screens inside the courtroom showing some of the alleged inflated values of Trump's properties alongside the amounts the properties were appraised at.

Seated in his chair with his arms crossed, Trump visibly shook his head at times during the prosecutor's opening statement. At one point he seemed to mutter something under his breath.

The former president whispered with his attorneys throughout.