While taking readings through fixtures, trends may be raised. If a trend is raised then the user has to take a corrective action based on the settings done in the Trend Settings screen.
You can select the Root Cause, Sub cause from the respective drop down list box. If trends are raised at level-2, then corrective action needs to be compulsory taken, but at level-1 corrective action may or not be taken. Click on Ok button to save the corrective action taken and close corrective action trend screen. Click on Cancel button to close the corrective action screen, provided trends are raised at first level and not at the second level.