Solution : https://service.sap.com/sap/support/notes/807760 (SAP Service marketplace login required)
Key words : 
/sapapo/om_order_modify function module, /sapapo/om_opt_get_act_net function module, installation file lc740338a40_16-nnnnnnnn, system requirement aix - livecache 7, top-order guid, incorrect target resources, consecutive material flows, fixing pegging relationships, solution import scm 4, aps_simsession_control lca routine
Related Notes : 
       
| 862510 | Repairing inconsistent multilevel ATP in liveCache | 
| 798790 | Error -9806 when accessing table OMS_VERSIONS | 
| 781601 | Avoiding access to table OBJECTLOCKS/LOCKSTATISTICS | 
| 774161 | Access to DB50 or LC10 is not possible. | 
| 764537 | Problems when you initialize liveCache (SCM 4.0 & 4.1) | 
| 753528 | LCA builds on SAP Support Portal | 
| 720261 | System requirement AIX - liveCache/MaxDB 7.4 to 7.9 | 
| 710165 | Feature list for liveCache/SAP DB 7.4.03 | 
| 622197 | Importing liveCache Version 7.4.03/7.5.00 for SAP SCM 4.0 | 
| 603852 | Additional information about upgrading to SAP SCM 4.0 | 
| 496318 | Parameter values as of liveCache Version 7.4.02 | 
| 490958 | Initial parameterization of liveCache 7.4.2 and 7.4.3 | 
| 487972 | Operating system parameterization of liveCache |