How To Fix /IWBEP/CM_V4_MED219 - Scale cannot be set on primitive type '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 219

• Message text: Scale cannot be set on primitive type '&1'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED219 - Scale cannot be set on primitive type '&1' ?

  The SAP error message /IWBEP/CM_V4_MED219 Scale cannot be set on primitive type '&1' typically occurs in the context of OData services when there is an issue with the data type definitions in your service. This error indicates that there is an attempt to set a scale (which is usually relevant for decimal types) on a primitive data type that does not support it.
  Cause:
  
  Data Type Mismatch: The error usually arises when a field in your OData model is defined with a primitive type that does not support scale, such as Integer, Boolean, or String, but the metadata or the service definition is trying to apply a scale to it.
  Incorrect Metadata Definition: If the metadata for the OData service incorrectly defines a field as a decimal type but the underlying data type in the database is not compatible, this can lead to the error.
  Model Annotations: Sometimes, annotations in the model might incorrectly specify scale for a primitive type.
  
  Solution:
  
  Check Data Types: Review the data types defined in your OData service. Ensure that fields that require scale (like currency or decimal types) are defined as Edm.Decimal or similar types that support scale.
  Adjust Metadata: If you have control over the metadata, adjust it to ensure that the scale is only applied to appropriate types. You can do this in the service definition or the underlying data model.
  Update Service Implementation: If you are implementing the OData service, ensure that the implementation aligns with the metadata definitions. If a field is defined as a decimal, ensure that the underlying data source (like a database table) also reflects this.
  Regenerate OData Service: If changes are made to the underlying data model or metadata, regenerate the OData service to ensure that the changes are reflected.
  Check Annotations: Review any annotations in your service that might be incorrectly specifying scale for primitive types.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. Sometimes, specific versions of SAP may have bugs that are documented in SAP Notes.
  OData Documentation: Review the OData documentation for guidelines on defining data types and scales.
  Debugging: Use transaction codes like /IWFND/ERROR_LOG to get more details about the error and trace it back to the specific service or model causing the issue.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.