In Workday Adaptive Planning, General Ledger accounts are created under Root accounts, which are the primary account categories forming the top level of the Chart of Accounts hierarchy. Root accounts represent the major financial statement categories --- such as Assets, Liabilities, Equity, Revenue, and Expenses --- and serve as the parent containers under which all user-created GL accounts are organized. Prepaid Advertising is an asset or operating expense account in standard accounting classifications, and the new GL account would be created as a child of the appropriate Root account category (e.g., under Assets for a prepaid classification, or under Operating Expenses). The navigation path is Modeling > Model Management > Accounts, where the administrator selects the relevant Root account and creates the new GL account beneath it. System accounts are pre-configured accounts managed internally by Adaptive Planning for system-level processing and cannot be created by users. Assumption accounts are reserved for global planning constants such as rates and percentages, not transactional GL accounts. Contra accounts are a sub-classification used to offset specific account balances (e.g., Accumulated Depreciation offsetting Fixed Assets) and are not a primary creation category for new accounts. Reference: Workday Adaptive Planning --- Chart of Accounts, Root Accounts, GL Account Creation, Model Management.