Message type: E = Error
Message class:  CNV_NCE_BAS - Number conversion engine: messages 
Message number: 144
Message text: NR interval &1: alphanumeric pattern '&2' is not allowed
You have specified an alphanumeric pattern for the corresponding number
range interval, although the target number range interval is not an
external one. Only numeric values are allowed for the internal number
range intervals.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Select the <ZK>External</> checkbox for the target NR interval, or
specify a numeric pattern.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_NCE_BAS144 typically occurs during data conversion processes, particularly when using the SAP Data Migration tools or during the execution of a conversion program. This error indicates that there is an issue with the format of the data being processed, specifically that an alphanumeric pattern is not allowed for a certain interval.
Cause: The error message can be broken down as follows: NR interval &1: This indicates that the error is related to a numeric range (NR) interval, where &1 would be the specific interval number. Alphanumeric pattern '&2' is not allowed: This part of the message indicates that the data being processed contains an alphanumeric value (represented by &2) that does not conform to the expected numeric format. Common causes for this error include: Incorrect Data Format: The data being imported or converted contains characters that are not valid for a numeric field (e.g., letters, special characters). Data Mapping Issues: There may be
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