A task is open for time entry and the person is staffed on the project, but the user is unable to add hours against it.
The user can see the task in their timesheet in the New User Experience (UX), but the task is grey so time can't be tracked on it.
Release : All Supported Releases
Component : CA PPM SAAS TIME MANAGEMENT
Check to verify the following is set: 1. Is the project the task belongs to active and open for time entry with track mode of PPM? 2. Is the resource open for time entry on the team tab of the project? 3. Are there any parent tasks above this task (one way to verify is by looking at the task in the gantt chart). If so, any tasks that are parent tasks to the task also have to be open for time entry. 4. Is the assignment status for the resource on the task not started or started? It will need to be in one of these status for it to be able to tracked as expected in time tracking.
See KB: 27000 - Clarity PPM: Timesheet Population - What determines tasks appearing on a timesheet?