Solution : https://service.sap.com/sap/support/notes/1037992 (SAP Service marketplace login required)
Key words :
terms negative unplanned delivery costs, negative unplanned delivery costs, 'basic data' tab, purchase order items, short dump occurs, rbkp-wmwst reason, entered offsetting items, offsetting item, mm transaction, tax-relevant
Related Notes :
| 925287 | DYNPRO_FIELD_CONVERSION with manual tax in the vendor |
| 902325 | Dump 'Dynpro_Field_Conversion' SAPLTAX1 screen 300 or 301 |
| 891497 | Dump 'Dynpro_Field_Conversion' due to negative tax amount |
| 885799 | DYNPRO_FIELD_CONVERSION with manual tax in the vendor |