Solution : https://service.sap.com/sap/support/notes/497123 (SAP Service marketplace login required)
Key words : 
system displays error message rw100, system generates error rw100, include import parameter i_okcode, add import parameter i_okcode, function module mrm_prot_checktransaction se37, ------------------------------------------------------------------------add import parameteri_okcode, function module mrm_prot_check, i_okcode   type spec, rbkp-rbstat = 'e', type  reference type
Related Notes : 
       
| 795600 | MIR4: Message log in parking | 
| 589371 | MIRO: Error log w/ 'Noticing' function | 
| 582059 | BAdI: No consideration of system messages | 
| 512636 | MIR7, MIR4: Message log not updated | 
| 496839 | MIR7:message M8082 as an error message prevents saving |