How do you know which amount is a debit and which amount is a credit in SAP? This is a systems question.

Example: create invoice receipt from vendor in SAP.

#1. Account Type K for vendor = 300.00- EUR #2. Account Type S for G/L accounts = 300.00 EUR

Is #1. the credit indicated by the (-) sign above? So, representing increase to liability for A/P to vendor? Is #2. the debit indicated by no (-) sign, representing increase to asset for inventory received from vendor?

Would this be reflecting the traditional journal entry: dr. Inventory/Asset 300.00 cr. Vendor/Liability 300.00