T-code: F-32 is to clear customer.
1. All open Item selection.
1) Input & press "ENTER" key.
2) Choose an item which paid and find the balance is Zero between entered and assigned.
3) Click Simulate.
4) Check the balance and save the document.
5) Document 290000002 was posted.
2. Additional selections.
1) Input Customer Account: 14454.
2) Select Text and press "Enter"key.
3) Input Text: *TEST and click Process Open Items.
4) Choose an item which paid and find the balance is Zero between entered and assigned.
5) Click Simulate.
6) Check the balance and save the document.