Simplified
Assignment of Open Items via the Internet 
Scope of Functions
If essential information is missing when you are trying to assign open customer items, such as invoices, credit memos, and payments on account, you can now obtain the necessary information directly from your customers via the Internet. This enables you to simplify and speed up the clearing process.
To make this possible, you provide the customer with an R/3 user and allow him or her to access the open items. The customer can make the assignments simply by clicking, and then send the information back to you.
The user interface of the Internet transaction is easy to use even for users who have no knowledge of the SAP R/3 System.
The new function can also be accessed within the R/3 System, thus simplifying the process of assigning open items. You can find the function in the accounts receivable menu under Account -> Assignment.
A clerk can use the Assign/clear open items transaction to make the assignment and also - depending on his or her authorization - trigger clearing immediately.
Selecting Edit assigned items, an accounting clerk can have the system display a worklist of all items that have already been assigned but not yet cleared, and then process this list.
Effects on System Administration
The Internet user concept is provided by Basis.
Effects on Customizing
You must enable your customers to access the
Internet transaction and the necessary data. To do so, carry out the activity
Maintain Users and Accounts for Internet Services in
Customizing for Financial Accounting under Accounts Receivable and Accounts
Payable.