Issue:
Unable to update just one PM task with more than 300 tasks. When tried to save the PM task, it simply throws "User does not have sufficient privilege".
Cause:
By default we would have restricted for these many tasks added in PM task. We can allow to add any of number of tasks by adding an entry in a file called security-requestaccess.xml.
Fix:
1. Navigate to ManageEngine\ServiceDeskPlus-MSP\webapps\ROOT\WEB-INF\security and take a backup of the file 'security-requestaccess.xml'.
2. Download, extract the file from the below link and replace it under the above mentioned location.
3. Restart the application and check the issue.
NOTE: This fix is applicable for build 9400 and above.