https://userapps.support.sap.com/sap/support/knowledge/en/3495387
3495387 - How to use BAPI_FTR_IRATE_DEALCHANGE to update field Capitalize Interest | SAP Knowledge...
Using BAPI_FTR_IRATE_DEALCHANGE to update field Capitalize Interest (Tick/ untick), however it is not updated even passing the values X.