How To Fix /IWBEP/CM_V4_MED156 - Scale value invalid on return of operation '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 156

• Message text: Scale value invalid on return of operation '&1'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED156 - Scale value invalid on return of operation '&1' ?

  The SAP error message /IWBEP/CM_V4_MED156 Scale value invalid on return of operation '&1' typically occurs in the context of SAP Gateway and OData services. This error indicates that there is an issue with the scale value of a numeric field being returned in an OData response. The scale value refers to the number of digits to the right of the decimal point for a numeric field, and if it is invalid or exceeds the defined limits, this error can be triggered.
  Causes:
  
  
  Invalid Scale Definition: The scale defined in the data model for a numeric field does not match the actual data being returned. For example, if the field is defined to have a scale of 2 but the data being returned has more than 2 decimal places.
  
  
  Data Type Mismatch: The data type of the field in the backend system may not align with the expected data type in the OData service.
  
  
  Incorrect Mapping: There may be an issue with how the fields are mapped in the OData service, leading to incorrect data being sent back to the client.
  
  
  Backend Data Issues: The data in the backend system may have been incorrectly entered or processed, leading to invalid scale values.
  
  
  Solutions:
  
  
  Check Data Model: Review the data model in the OData service to ensure that the scale and precision settings for numeric fields are correctly defined.
  
  
  Adjust Backend Data: If the backend data is causing the issue, correct the data entries to ensure they conform to the expected scale and precision.
  
  
  Modify OData Service: If necessary, modify the OData service to handle the scale correctly. This may involve adjusting the metadata or the way data is processed before being returned.
  
  
  Debugging: Use debugging tools in SAP to trace the execution of the OData service and identify where the invalid scale value is being generated.
  
  
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as this may resolve known issues related to OData services.
  
  
  Related Information:
  
  
  SAP Notes: Check SAP Notes for any known issues or fixes related to this error message. SAP frequently releases notes that address specific problems with OData services.
  
  
  OData Documentation: Review the official SAP documentation on OData services for best practices in defining data types, scales, and precision.
  
  
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can provide insights or solutions.
  
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the error message /IWBEP/CM_V4_MED156 Scale value invalid on return of operation '&1'.