Dashboard View issue

Hi Everyone,
I have one scenario like:
1.I have created one dashboard with 4 charts in it.
2.I am able to see 4 charts when i have system manager role .
3. But when i remove system manager role i am able to see only 3 charts,4th one is not coming as that chart is Sales order item doc-type.
4.There is no permission level for Sales order item doc-type,its only with system manager role.

Can anyone suggest some workaround like what permission i should give apart from system manager role to access document within document data.

The system manager has all the permissions. So which role you had given permissions to access the dashboard also must have permission to access the sales order.

In the roles and permissions, give permission of sales order so that the user can see that card.