Solution : https://service.sap.com/sap/support/notes/447848 (SAP Service marketplace login required)
Key words : 
cross-company-code document, company code clearing lines, source company code, logistics invoice verification, sales/purchases codes, company code, transaction miro, expense item, revenue item, incorrect +/- sign
Related Notes : 
       
| 442207 | Error message RW022 in Transaction MR1M | 
| 418144 | MIRO F5735/702 w/ cross company-code foreign currency docs |