INVALID_FLD_VALUE Error for price level field.

For setting price levels in the sales order record, I used to write a server-side script. However, I receive the error invalid field value for the “price” field.
When I investigated the reason, I discovered that we are unable to set the price level for the following item type. The following are the item types:

1. EndGroup
2. OthCharge
3. Service
4. Discount
5. Subtotal
6. Description