Message type: E = Error
Message class:  FKKFMCHK - Funds Management Checks/Derivations in FI-CA 
Message number: 065
Message text: Inconsistent data. Create a customer incident.
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The SAP error message FKKFMCHK065 indicates that there is inconsistent data in the Financial Contract Management (FCM) module, specifically related to the billing or contract data. This error typically arises when there are discrepancies in the data that prevent the system from processing a transaction correctly.
Cause: Data Inconsistency: The error often occurs due to inconsistencies in the billing documents, contract data, or customer master data. This could be due to missing or incorrect entries in the relevant tables.
Configuration Issues: Incorrect configuration settings in the Financial Contract Management module can lead to this error. Incomplete Data: If certain required fields are not filled out or if there are missing references (e.g., missing customer or contract information), this can trigger the error. System Updates or Changes: Recent updates or changes to the system might have introduced inconsistencies in the data.
Solution: Check Data Consistency: Review the relevant billing documents, contracts, and customer master data for any inconsistencies.
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