If you need to delete unnecessary fields:

1. Click the Setup gear (upper right) and select Setup

2. Click the Object Manager tab (not the down-arrow) and select the Pitch object from the list in the central panel

3. Click Fields & Relationships on the left-hand vertical menu

4. Find the row with the name of the field you want to delete

5. On the far right of that row, click the down-arrow, to get a drop-down menu and click Delete

6. On the confirmation popup, click the blue Delete button to confirm

7. Re-grade by using the App Launcher to open the Grader App and follow instructions to run the scoring routine again and then be sure to reload the page to see the updated error list & grade certificate