Solution : https://service.sap.com/sap/support/notes/1132350 (SAP Service marketplace login required)
Key words : 
sp patch level section, parameterrdisp/test_roll = true, apply patch level 154, invalid high_prio request, kernel patch level 145, missing function modules, patch level recommended, patch level 145, patch level, function modules
Related Notes : 
       
| 1634757 | Guided Self Service 'Performance Optimization' | 
| 1594405 | ST-SER 2010_1: Maintenance of SAP Kernel issues | 
| 1223994 | Composite SAP note: Incomplete update records | 
| 1177859 | IS-H: Inconsistencies due to incomplete update requests | 
| 1153975 | All work processes are used by the user SAPSYS | 
| 1150058 | Incomplete update records | 
| 1149742 | SAP (CQC) Going Live Support | 
| 1143576 | SM13 Canceled update requests with <OBJECT>_WRITE_DOCUMENT | 
| 1139307 | CST Patch Collection 07 2008 | 
| 1076804 | Incomplete update records |