Solution : https://service.sap.com/sap/support/notes/1039052 (SAP Service marketplace login required)
Key words : 
system issues error message i0 230 ', system issues error message i0 231, alm bapi downgrade kit, error message i0 231 'maintplant &1, error message i0 230, relevant correction instructions, account assignment data, maintenance plant reason, terms i0 231, program error
Related Notes : 
       
| 708508 | Downgrade BAPI_ALM_ORDER_MAINTAIN -> errors |