Solution : https://service.sap.com/sap/support/notes/979307 (SAP Service marketplace login required)
Key words :
system outputs positive quantities, system displays amounts, alv grid control, accounting editing options, credit line items, relevant support package, manual advance correction, document overview, transaction fb00, general ledger
Related Notes :
| 1178561 | FB03/general ledger view: Neg qties displayed as positive |
| 974324 | Grid control FB03/ALV: no plus/minus sign BSEG-PSWBT |
| 328889 | FB03: Positive quantity in credit lines |