## Documentation Index

Access the complete documentation index at:
https://www.zoho.com/uk/books/kb/llms.txt

Use this file to discover all available documentation pages before proceeding.

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# What is Transaction Locking?

When your business accounting period closes and you wish to freeze your transactions in the period from being modified or deleted is when Transaction Locking comes into play. Once Transaction lock in enabled, all transactions before the set date cannot be Edited or Deleted. Addition of new transactions are also restricted before the set date.

Click [here](/uk/books/help/accountant/transaction-lock.html) to learn more about enabling Transaction Locking.