Which of the following is NOT a ground for disciplinary action against a license holder regarding trust funds?

Keeping an account of funds for four years is not grounds for disciplinary action against a license holder because it aligns with the typical requirements for record-keeping in real estate transactions. Real estate agents are generally required to maintain accurate and thorough records of client funds, including trust funds, for a specified duration, and four years usually falls within acceptable practices for compliance.

In contrast, failing to keep an account of funds, improperly using deposit funds, and commingling personal and client funds all represent behaviors that can lead to serious consequences. Accurate tracking and management of trust funds is crucial to protect clients' money. Violations in this regard can not only lead to disciplinary action but can also damage the trust between the license holder and their clients. Therefore, maintaining an account of funds for a timeframe like four years indicates proper adherence to regulations rather than a reason for disciplinary measures.