Message type: E = Error
Message class:  CNV_DMC_SIN - Messages for s-innovations migration 
Message number: 421
Message text: Rec. can not be processed with user decimal format &1. Change to &2 or &3
Record with POD Timeframe must be processed with user decimal format 1
,234,567.89 or 1.234.567,89. Change your user default settings and
continue.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_DMC_SIN421 typically occurs during data migration or conversion processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools. This error indicates that there is a mismatch between the user-defined decimal format and the expected decimal format for the data being processed.
Cause: The error message suggests that the record cannot be processed because the decimal format used by the user (indicated by &1) does not match the required decimal format (&2 or &3). This can happen due to: User Settings: The user's decimal notation settings in their SAP profile may not align with the data being processed. Data Format: The data being imported or converted may have a different decimal format than what is expected by the system. Regional Settings: Differences in regional settings (e.g., comma vs. period as a decimal separator) can lead to this issue.
Solution: To resolve this error, you can take the following steps: Check User Settings: Go
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