Solution : https://service.sap.com/sap/support/notes/1089914 (SAP Service marketplace login required)
Key words : 
system makes unnecessary rpm requests, avoiding empty tqa time series, clearing negative correction records corrections, temporary quantity assignments error corrections, lca routine sapatp_delta_rebuild_admin demand planning, delete temporary quantity assignments, empty taq time series, installation file lc760308a5013_5-nnnnnnnn, sql table/sapapo/ordkey, /sapapo/om_ts_data_change_fix function module
Related Notes : 
       
| 1097901 | Performance problems in ATP/TQAs cannot be deleted | 
| 875662 | Importing liveCache version 7.6 | 
| 869651 | Prerequisites for upgrading to SCM 5.0 | 
| 833216 | Parameter values as of liveCache Versions 7.5, 7.6 and 7.7 | 
| 753528 | LCA builds on SAP Support Portal | 
| 487972 | Operating system parameterization of liveCache |