By default, you have but one counterparty, “New customer”.
You are not required to set up counterparties. So why would you enter them into the system?
If you have set up counterparties and perform operations specifying them, then you will be in a position to:
- Receive reports by counterparty: what your turnover with him is, how much goods you have bought from or sold to him.
- Print documents with the counterparty's details (certificates, notes, bills etc)
If you have no need for this, you need not bother.