You can use this task to delete unused materials.
Note
Only materials that have not been used can be deleted. If a material has been used, you can use the Maintain Selected Material task to make it inactive.
To delete material, follow these steps:
1. Go to System Administration > Maintenance Setup.
2. From the Choose Item field, select Materials.
3. On the Materials list, highlight the material that you want to delete.
4. Go to Tasks > Delete Selected Material.
5. Select the confirm that you would like to delete this material check box.
Note
This check box is not available if the material is being used in Property Manager.
6. Click Finished.