Solution : https://service.sap.com/sap/support/notes/331364 (SAP Service marketplace login required)
Summary :
Key words :
additional key words mass_change_datai_mass_build_segment_keysi_mass_forkey_table, 'processing mode' dialog box, system issues error message, 'object type' lfa1, mass maintenance tool, 'corrections' -> 'correction instructions', copy partner functions, attached advance corrections, choose 'table' wyt3, check table wyt1
Related Notes :
| 557702 | FAQ for mass maintenance |
| 351283 | Creating data records using mass maintenance |
| 339444 | Initial data creation: Field without foreign keys |