Solution : https://service.sap.com/sap/support/notes/420562 (SAP Service marketplace login required)
Key words : 
exit p_cprold change pointer sap standard p_maxcnt maximum number, function modules    user-defined include-files, system-defined include-files, pbo-modules include lzscpi, sy date + sy-time, change pointer sap standard, global data  include lzscpuxx, distribution-relevant fields maintained, symptom unnecessary change pointers, evaluate ale change pointers
Related Notes : 
       
| 733978 | BOMMAT change pointer for every BOM category | 
| 626628 | ALE: No release of temporary segments |