Solution : https://service.sap.com/sap/support/notes/82968 (SAP Service marketplace login required)
Key words : 
additional key words vf02, condition values, billing documents, program error, read table, error occurs, hot package, advance correction, correction, conditions
Related Notes : 
       
| 204130 | SIS update: Collective note | 
| 74990 | Wrong open billing document value after reversal | 
| 70091 | Performance SIS sales order, delivery, billing doc. |