Solution : https://service.sap.com/sap/support/notes/804693 (SAP Service marketplace login required)
Key words :
error message xt465 'parameter &1, exit_saplmr1m_004 function module, 'exit_saplmr1m_004' user exit, transaction 'sap enhancement', 'mrm_wt_split_update' business add-, business add-, mrm_wt_split_update reason, transaction smod, lmr1m001 enhancement, tp configuration'
Related Notes :
| 459425 | MR1M: User exit for changing withholding tax data |