Incomplete records refers to a situation in which an organization is not using double-entry bookkeeping. Instead, it is using a more informal accounting system, such as a single-entry system, to maintain a reduced amount of information about its financial results. Under a single-entry system, it is possible to maintain a cash-basis income statement, but not a balance sheet.
It is also possible that the managers of a business intend to maintain a double-entry bookkeeping system, but the underlying accounting records are incomplete. There are many reasons for this situation, including the following:
Loss during transition. A company may not adequately protect its old records when moving to a new accounting system, and irretrievably loses some or all of the old records.