Sum range with two conditions

[bdmistri]

I have few POs. Each PO has PO items. PO items are typically same for all POs.

I have a summary in XLS with PO nos, po items (only one po item for a row corresponding to the po no) and charges.

I need to total charges for a given PO and given PO item. Please refer attached XLS file - sheet 1 and sheet 2.

Please help.

Thanks and regards,
bdmistri