Solution : https://service.sap.com/sap/support/notes/146221 (SAP Service marketplace login required)
Key words :
system generates error message ok020, key aufnr = xxxxxxx, additional key words, maintenance orders, table itab_netz, prerequisites solution, attachment
Related Notes :
| 145509 | AFS V1.0D2 Fixpack #3 including HP/LCP 6-18 |