Once you have reviewed and approved your data for spcific period such as a financial year using Data Reviews it is possible to "lock" activity data up to end of that reporting period.

This is to prevent someone from altering data that may have been announced or published in some way. 

Locking activity data does not prevent changes being made. However, data for the locked period is highlighted and a warning is presented to the user.

When locked data is updated 

  1. A special entry is placed in the history trail
  2. A comment is added to the comments for that month
  3. The change will appear in the report: Changes Made to Locked Activity Data