Solution : https://service.sap.com/sap/support/notes/669379 (SAP Service marketplace login required)
Key words : 
merging master data deletions, /sapapo/om_act_schedule function module, plan dependent objects infinitely, sap service marketplace due, fill gaps till end, installation file lc740330a40_07-nnnnnnnn, deleting requests error correction, lca build 08 patch level 901, 0 lca build 07 patch level 001, sap service marketplace
Related Notes : 
       
| 753528 | LCA builds on SAP Support Portal | 
| 715265 | liveCache hangs when started | 
| 710165 | Feature list for liveCache/SAP DB 7.4.03 | 
| 703011 | liveCache 7.4.3 Build 30 no longer starts | 
| 693466 | Error caused by unscheduled activities | 
| 692749 | SCM 4.0 LCA Build 08 | 
| 688063 | liveCache does not stop completely. | 
| 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 |