Unique way to identify the lines pertaining to a particular customer (Other than Customer Number/Nam

Hi Frds,

Is there field in RA INterface lines with which we can identify the lines pertaining to a particular customer/s. I need a field other than Customer Name/Customer Numbers. Say Party Fiscal Classification/Tax Registration Status etc.

I tired to figure that out but no such values exists to unqiuly classify a customer.

Requirement:

Uniquly classify a customer and perform some additonal activities on eligible interface lines.

Example - Customer who run ferries in EU - Example - UK to Ireland etc- They need to be classified separatly to get a different tax code and on top of that they are eligible for customer exemption etc.