How To Fix /IWBEP/CM_V4_MED157 - Scale value invalid on parameter '&1' of operation '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 157

• Message text: Scale value invalid on parameter '&1' of operation '&2'

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED157 - Scale value invalid on parameter '&1' of operation '&2' ?

  The SAP error message /IWBEP/CM_V4_MED157 Scale value invalid on parameter '&1' of operation '&2' typically occurs in the context of OData services when there is an issue with the scale value of a parameter in a request. This error is related to the way that numeric values are defined and handled in the OData service.
  Cause:
  
  Invalid Scale Value: The scale value of a numeric parameter in the OData request does not match the expected format defined in the service metadata. This can happen if the value provided in the request has too many decimal places or is not formatted correctly.
  Data Type Mismatch: The parameter may be defined with a specific data type (e.g., Decimal, Float) in the OData service, and the value provided does not conform to that type.
  Service Metadata Issues: There may be discrepancies between the service metadata and the actual implementation, leading to mismatches in expected parameter formats.
  
  Solution:
  
  Check the Request: Review the OData request being sent to ensure that the numeric values conform to the expected scale and precision defined in the service metadata. Adjust the values accordingly.
  Review Service Metadata: Use the OData service's metadata endpoint (usually accessible via a URL ending in $metadata) to check the definitions of the parameters and their expected data types and scales.
  Adjust Data Types: If you are generating the request programmatically, ensure that the data types and formats of the parameters are correctly set according to the service's expectations.
  Testing with Different Values: If possible, test the service with different values for the parameter to identify what is acceptable and what triggers the error.
  Consult Documentation: Refer to the documentation for the specific OData service you are using to understand the expected formats and constraints for the parameters.
  
  Related Information:
  
  OData Protocol: Understanding the OData protocol and how it handles data types, especially for numeric values, can help in troubleshooting these types of errors.
  SAP Gateway: If you are working with SAP Gateway services, familiarize yourself with the configuration and implementation of OData services in SAP.
  Debugging Tools: Use tools like SAP Gateway Client (transaction /IWFND/GW_CLIENT) to test OData services and see how different inputs are handled.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.