G/L Account Number (General Ledger) 
Definition
The G/L account number indicates the
G/L account that you are posting a line item to.
G/L account number 113109 is a clearing account for incoming payments, number 80000 is a sales account.
You can also use the search help to find the account number. The system stores certain fields from the G/L account master record in a matchcode. You can search for an account using those fields.
To search for a number, select Account number. Display the possible entries to get an overview of the available search fields.
For more information about using matchcodes to search for account numbers, see Working with the SAP System in the SAP Library and the