customer and sold.to.party field

Hi,

I have a question related to cproject I hope someone can help me.

We would like to use customer and sold-to-party fields for a project. When we select these field , 'BP' values are retieved. We would like customer values ( data from ERP) are showed in this matchcode, Is this possible? ( link customer field to ERP).

In the case only BP values can be retrieved from these fields, how can I difference from employee and customer?

I'll appreciate any help!

Thanks a lot,

Sara