Solution : https://service.sap.com/sap/support/notes/148214 (SAP Service marketplace login required)
Key words :
system generates error message ah331, 1b solution apply add-, additional key words reversal, long text informs, attached source code, reverse invoicing document, invoicing document, mass reversal, periodic billing, final billing
Related Notes :
| 151282 | Reversal: Incorrect billing documents reversed |
| 147545 | Collective note IS-U/CCS 1.2 - Add-on patch 003 |