Hi, I need help with this transaction on a client, I only know he has violated at least one of the accounting assumptions, concepts or definitions but do not know which one.

I need to:

• Explain the main accounting concept or assumption & definition that has been violated
• Describe what the correct treatment should be.

Luke, the owner of a market garden, paid for repairs to the gutters of his home using the business bank account.He recorded this as a debit to Maintenance Expense and credit to Cash at Bank in the business accounts.

please help, Thankyou