2491908 - FICUSTOM401: FMDERIVE Consistency Check 01 error during WRX RMRP

You are using Funds Management in an S/4HANA system, or migrated from an older release with Funds Management active to S/4HANA
You receive error FICUSTOM401 while posting Invoices
In the case of Upgrade, this error did not occur before with the previous FMDERIVE settings

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.

S/4HANA with Funds Management active

FICUSTOM401 FI CUSTOM401 FICUSTOM 401 MIRO MIGO KBA Commitment item Financial transaction GR GR_CLR IR_CLR Good Receipt MIGO RMWE RMRP Invoice receipt Invoice Inv IR Goods receipt GR GRN Goods issue FM_DERIVE_ACCOUNT_FROM_COBL  FM_FMDERIVE_CONSISTENCY 2491908 , KBA , PSM-FM-UP-AD , Account assignment Determination , Problem