Solution : https://service.sap.com/sap/support/notes/88187 (SAP Service marketplace login required)
Key words :
menu path 'tools -> abap/4 workbench -> development -> programming environ, menu path ' tools -> abap/4 workbench -> development -> programming environ, additional key words mr21, material debit/credit, object list sirk004230, 'material debit/credit, object list p30k177017, button individual maintenance, object component messages, 'maintain message class'
Related Notes :
| 336962 | IS-OIL: MR21/MR22 allow postings at negativ stock level |
| 102463 | MB01:Message M7304 or M7308, article inconsistency |