Solution : https://service.sap.com/sap/support/notes/381624 (SAP Service marketplace login required)
Key words :
posnr uepos pstyv uecha000010 000000 tax 000010000020 000000 tax 000010 <--- incorrect, posnr pstyv uepos xchar uecha000001 tax 000000, multi-level item hierarchies, previous batch main item, 'higher-level item, batch split item', product selection item, batch split items, product selection items, 000002the billing document
Related Notes :
| 971943 | Item selection for batches (UECHA field) |
| 321719 | Item hierarchy: Product selection & batches |
| 189515 | Correction program for VBRP-UECHA |