Register maintenance requires prompt entries after board approval and disclosure of promoter pledges with specified timeframes. Companies must make register entries for allotments, transfers and other security changes within seven days of Board or committee approval, and keep registers at the registered office unless a special resolution permits another location. Entries or references must be made for corporate actions (forfeiture, buy back, subdivisions, consolidations, transmissions, schemes, duplicate certificates), changes in member status, rectifications pursuant to authority orders, and attachments by judicial, revenue or securities authorities. For listed companies, promoter pledges, charges, liens or hypothecations, including pledgee details and revocations, must be recorded within the shorter specified timeframe, with similar disclosure for pledges connected to joint ventures.