Customer Master Upload using FBDI

We are uploading the customer master using FBDI. However we are having following concerns.

01. Customer contacts creating only at the account level. (We need to have it Site Level)

02. Even though the email address entered in the FBDI, it does not shown in the UI.

03. We need to create fiscal classification using the FBDI. Following details were entered and uploaded to the system. However it shows the error mentioned below.

Error - You must define the value for the CLASS_CODE column in the CLASS_CATEGORY lookup type.

Thanks,

Kalana