How To Fix CNV_00001312 - Field &1 cannot be aggregated (either key field or wrong data type)

CNV_00001312 - Overview

• Message type: E = Error

• Message class: CNV_00001 - Message class for CWB settings maintenance programs

• Message number: 312

• Message text: Field &1 cannot be aggregated (either key field or wrong data type)

Self-Explanatory Message

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CNV_00001312 - Details

• The SAP error message CNV_00001312 indicates that there is an issue with data aggregation in a conversion or migration process. Specifically, the error states that a field cannot be aggregated because it is either a key field or has the wrong data type. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause
  
  
  Key Field: The field in question may be a key field in the database, which means it is used to uniquely identify records. Key fields cannot be aggregated because aggregation requires combining multiple records into a single value, which is not possible with unique identifiers.
  
  
  Wrong Data Type: The field may have a data type that is incompatible with aggregation functions. For example, trying to aggregate a string field or a field that contains non-numeric data using a numeric aggregation function (like SUM) will lead to this error.
  
  
  Solutions
  
  
  Review Field Definitions: Check the field definitions in the source and