Common Party Accounting in TechoERP involves accounting of unusual transactions like creating a Sales Invoice against a primary Supplier.

Let's assume an TechoERP user who has been making Purchase Invoices against a Supplier, wants to make a Sales Invoice against the same supplier and adjust this Sales Invoice against one of the previous purchases.

The above can be achieved by enabling Common Party Accounting.

Steps:

1. Go to Accounts Settings and enable Common Party Accounting.
2. Create a link between two parties
3. If the primary role of the party is Supplier, then go to the Supplier Master and Click on Actions -> Link with Customer
4. If the primary role of the party is Customer, then go to the Customer Master and Click on Actions -> Link with Supplier
5. 
6. Create a Sales Invoice against the Customer that was set as Secondary Party in the 4th step.
7. On submitting the Sales Invoice, a Journal Entry will be posted automatically that will create an advance balance against the linked Supplier.
8.