How To Fix /IWFND/CM_DESIGNTIME023 - Unexpected data type: '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_DESIGNTIME -

• Message number: 023

• Message text: Unexpected data type: '&1'

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_DESIGNTIME023 - Unexpected data type: '&1' ?

  The SAP error message /IWFND/CM_DESIGNTIME023 Unexpected data type: '&1' typically occurs in the context of SAP Gateway and OData services. This error indicates that there is an unexpected or unsupported data type being used in the OData service definition or in the underlying data model.
  Cause:
  
  Unsupported Data Type: The error usually arises when the OData service encounters a data type that it does not recognize or support. This can happen if the data model includes custom or non-standard data types.
  Incorrect Metadata: If the metadata of the OData service is not correctly defined or if there are discrepancies between the data model and the service definition, this error can occur.
  Changes in Data Model: If there have been recent changes to the underlying data model (like changes in the database or data dictionary) that are not reflected in the OData service, it can lead to this error.
  
  Solution:
  
  Check Data Types: Review the data types used in the data model and ensure that they are supported by OData. Common supported types include Edm.String, Edm.Int32, Edm.Boolean, etc.
  Update Metadata: If there have been changes to the data model, regenerate the metadata for the OData service. This can be done using transaction code /IWFND/MAINT_SERVICE to maintain the service and regenerate the metadata.
  Check Service Implementation: If you are using custom implementations, ensure that the data types in your code match the expected types in the OData service definition.
  Debugging: Use transaction code /IWFND/ERROR_LOG to check for additional error details that might provide more context about the issue.
  Consult Documentation: Refer to SAP documentation for the specific version you are using to ensure that you are using supported data types and structures.
  
  Related Information:
  
  SAP Gateway: This is the technology that allows you to connect devices, environments, and applications to SAP systems. Understanding how it works can help in troubleshooting issues.
  OData Services: Familiarize yourself with OData standards and how they map to SAP data types.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for the error message or related keywords in the SAP Support Portal.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support or consulting with a developer who has experience with SAP Gateway and OData services.