Solution : https://service.sap.com/sap/support/notes/179864 (SAP Service marketplace login required)
Key words : 
contact sap development support fi-fm, information structure s111 document adjustment, customer-specific information structures, excessive business volume data, additional key words commitments, settlement statement statistical data, gather additional details, business volume data, incorrect updates occurred, info structures s011
Related Notes : 
       
| 208447 | Perf.: Statistics preparation & update in purchasing (EINS) | 
| 198428 | PURCHIS- commitm.- no freight f.PO in for. currency | 
| 183379 | Composite SAP note subsequent settlement (Purchasing) 4.6 | 
| 175160 | PURCHIS-GR for several PO items with PO generation | 
| 161491 | PURCHIS - Commitments performance SAPLEINS during GR | 
| 159580 | PURCHIS - Commitments - IR no update in simulation | 
| 152725 | Collective note: Subsequent settlement (Purch.) Release 4.5 | 
| 104668 | Collective note: Subsequent settlement (Purch.) Release 4.0 | 
| 40147 | Collective note: Subsequent settlement (Purch.) Release 3.0 |