Source & Category of Intercompany Supplier liability account when invoices is created in payables

If a supplier is an intercompany supplier and I am creating a payables invoices, the liability account is being picked from intercompany balancing rules instead of supplier sites. I wanted to know the source and category of such transactions such that I could set it up correctly instead of just using "Others" as source and category since it messes up with other transactions.

Payables & Purchase invoices isn't working to create supplier liability account.