Cannot add or remove Sub Project on ProjectIssue Go to a Project, go to Sub Project in related list, click Edit, try to add or remove a Project in the slush bucket and click save. The Project will not be added to the related list or be removed if there was already a sub project there.ReleaseallResolutionGo to the dictionary entry for the PARENT field on the TASK table. If they have checked the READ ONLY to TRUE or have added a dictionary entry override where the READ ONLY is true this will cause issues. As the Project is the PARENT of the sub project it will not allow you to add a sub project since it is blocking access to this.