Message type: E = Error
Message class:  CNV_DMC_SIN - Messages for s-innovations migration 
Message number: 274
Message text: Unit of Measure: Additional customizing required for ISO code &2
The unit of measure source value &V1& is mapped to ISO code &V2&.
The issue is caused by either:
ISO code is not assigned to an internal unit of measure (UoM).
The ISO code is assigned to one or more UoMs but no one is flagged as
primary.
The ISO code is assigned to more than one UoM that are all flagged as
primary.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
ISO codes need to be linked to an internal unit of measure. Please check
your UoM configuration and make the necessary changes.
The ISO codes are stored in table T006I.
The UoMs are stored in table T006.
SAP S/4HANA (S4CORE On premise):
Please check the following SAP Note
<DS:URLA.https://launchpad.support.sap.com/#/notes/2341050>2341050</>
and follow the instructions of that SAP Note incase one of the mentioned
ISO codes is missing.
SAP S/4HANA Cloud (SAPSCORE):
Contact the Service Center to implement the SAP Note
<DS:URLA.https://launchpad.support.sap.com/#/notes/2341050>2341050</> in
case one of the mentioned ISO codes is missing
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_DMC_SIN274, which states "Unit of Measure: Additional customizing required for ISO code &2," typically occurs during data migration or conversion processes, particularly when using the SAP Data Migration Cockpit or similar tools. This error indicates that there is a missing configuration related to the unit of measure (UoM) that corresponds to the specified ISO code.
Cause: Missing Customizing: The error usually arises when the system does not have the necessary customizing settings for the specified ISO code. This could mean that the unit of measure is not defined in the system or that it is not properly linked to the ISO code. Incorrect Mapping: The mapping of units of measure in the migration data may not align with the existing definitions in the SAP system. Data Quality Issues: The data being migrated may contain invalid or unrecognized ISO codes for units of measure.
Solution: To resolve this error, you can follow these
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