Solution : https://service.sap.com/sap/support/notes/709125 (SAP Service marketplace login required)
Key words : 
/sapapo/om_order_modify function module, function module /sapapo/om_order_change, 0 lca build 10 patch level 001, mode linkage problems, optimized troubleshooting options, request confirmation status, reduced memory requirement, dp time series, persistent data structure, solution import scm 4
Related Notes : 
       
| 753528 | LCA builds on SAP Support Portal | 
| 725818 | Corrected persistent storage in the Demand Planning | 
| 720261 | System requirement AIX - liveCache/MaxDB 7.4 to 7.9 | 
| 715265 | liveCache hangs when started | 
| 710165 | Feature list for liveCache/SAP DB 7.4.03 | 
| 647486 | R/3->APO: Handling of sequence-dependent setup activity | 
| 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 |