If you want to stop yourself and clients from making any kind of changes in the Xero organisation up to the period of where you are with reconciliation, you will have to set a later date to these fields and save them. Keeping this up to date will prevent changes from being made to the file which could result in major implications and potential rework.
Under Lock Dates, enter the date to lock transactions at.
3. Click Save.
Users with the Advisor user role can remove lock dates temporarily to allow changes to transactions.