How To Fix /IWBEP/CM_V4_MED158 - Scale value not possible on property '&1' of entity type '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 158

• Message text: Scale value not possible on property '&1' of entity type '&2'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED158 - Scale value not possible on property '&1' of entity type '&2' ?

  The SAP error message /IWBEP/CM_V4_MED158 indicates that there is an issue with the scale value of a property in an entity type when working with OData services in SAP Gateway. This error typically arises when the value being processed does not conform to the defined scale or precision for a numeric property in the OData model.
  Cause:
  
  Data Type Mismatch: The value being sent or received does not match the expected data type or scale defined in the OData service metadata.
  Precision and Scale Issues: The numeric value exceeds the defined precision or scale for the property in the entity type. For example, if a property is defined to accept a decimal with a scale of 2, and you try to send a value with more than two decimal places, this error will occur.
  Incorrect Mapping: There may be an issue with how the data is mapped between the backend and the OData service, leading to incorrect values being sent.
  
  Solution:
  
  Check Metadata: Review the OData service metadata (usually accessible via the service URL with $metadata appended) to understand the expected data types, precision, and scale for the properties in question.
  Validate Input Data: Ensure that the data being sent to the OData service conforms to the expected format. For numeric properties, ensure that the values do not exceed the defined scale and precision.
  Adjust Data: If you are generating or manipulating the data before sending it to the OData service, ensure that you format the numeric values correctly. For example, round or truncate values to fit the defined scale.
  Debugging: If you have access to the backend, you can debug the OData service to see what values are being processed and where the error is occurring.
  Update OData Model: If the scale and precision defined in the OData model are not suitable for your use case, consider updating the model to accommodate the required values.
  
  Related Information:
  
  OData Service Metadata: Accessing the service metadata can provide insights into the structure and constraints of the data being handled.
  SAP Gateway: Familiarize yourself with the SAP Gateway framework, as it is responsible for exposing OData services and handling data transformations.
  Data Types in ABAP: Understanding how data types are defined in ABAP and how they map to OData types can help in troubleshooting these issues.
  SAP Notes: Check for any relevant SAP Notes or documentation that may address known issues or provide additional guidance on handling this error.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.