Solution : https://service.sap.com/sap/support/notes/558313 (SAP Service marketplace login required)
Key words :
completely parked invoice document, 'change invoice document' transaction, system displays messages, 6c support package 34, transaction mir4, 70 support package 1, support package, message log, purchase order, direct postings
Related Notes :
527626 | MIR4/MR2M: Display of warning and error messages |