Here are the steps to edit or delete a picklist value mapping in Accompa-JIRA API integration:

1. Login using an account that has Administrator privileges.
2. Click Settings at the top-right of your Accompa system.
3. Click the  JIRA Integration link from the resulting menu.
4. Then click on the Manage all integrations link in the "Manage Integrations" section.
5. In the resulting page, click the Map Objects link next to the desired integration.
6. Then click the Configure Fields link for the desired object mapping.
7. In the page that appears, click the Map Values link for the desired field mapping.
8. Click  Edit or  Del links next to the desired picklist value mapping.
9. When you've finished editing/deleting the value mappings, click "Save" button.