This ones:
FEDI0001 Function exits for EDI in FI
F050S001 FIDCMT, FIDCC1, FIDCC2: Edit user-defined IDoc segment
F050S002 FIDCC1: Change IDoc/do not send
F050S003 FIDCC2: Change IDoc/do not send
F050S004 FIDCMT, FIDCC1, FIDCC2: Change outbound IDoc/do not send
F050S005 FIDCMT, FIDCC1, FIDCC2 Inbound IDoc: Change FI document
F050S006 FI Outgoing IDoc: Reset Clearing in FI Document
F180A001 Balance Sheet Adjustment
FARC0002 Additional Checks for Archiving MM Vendor Master Data
RFAVIS01 Customer Exit for Changing Payment Advice Segment Text
RFEPOS00 Line item display: Checking of selection conditions
RFKORIEX Automatic Correspondence
SAPLF051 Workflow for FI (Pre-Capture, Release for Payment)
F050S007 FIDCCH Outbound: Influence on IDoc for Document Change
But, you can try to resolve your requierment with validations and substitutions first:
http://help.sap.com/saphelp_erp2004/helpdata/en/5b/d231a843c611d182b30000e829fbfe/frameset.htm
or with BTE.
Regards.
Bluesky
