List the sequence of steps performed by underlying System to determine tax number and tax classification. | SAP-SD

  The underlying System uses the following sequence of steps to determine tax number and tax classification:
i. If the payer has a VAT registration number and is identical to the sold-to party, the tax number and tax classification are copied from the payer. The tax number is copied on the basis of the "country of destination relevant for taxes."
ii. If step 1 does not apply and If the Ship-to Party has a VAT registration number and the Sold-to Party does not have the same, tax number and tax classification are copied from the Ship-to Party.
iii. If step 2 does not apply, then tax number and tax classification are copied from the Sold-to Party.