How To Fix /IWBEP/CM_V4_COS018 - Required value control property not defined for property '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_COS -

• Message number: 018

• Message text: Required value control property not defined for property '&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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_COS018 - Required value control property not defined for property '&1' ?

  The SAP error message /IWBEP/CM_V4_COS018 Required value control property not defined for property '&1' typically occurs in the context of SAP Gateway and OData services. This error indicates that a required property for a certain entity type is not defined in the metadata or the service implementation.
  Cause:
  
  Missing Metadata Definition: The property indicated by &1 is expected to have a value control property defined in the OData service metadata, but it is missing.
  Incorrect Service Implementation: The service implementation may not correctly define the required properties for the entity type.
  Model Configuration Issues: There may be issues in the model configuration where the property is not properly mapped or defined.
  
  Solution:
  
  Check Metadata: Review the OData service metadata (usually accessible via the service URL with $metadata appended) to ensure that the property in question is defined correctly.
  Define Required Properties: If the property is missing, you need to define it in the relevant data model or entity type. This can be done in the SAP Gateway Service Builder (transaction code SEGW).
  Update Service Implementation: Ensure that the service implementation (e.g., methods in the DPC class) correctly handles the property and that it is being populated as expected.
  Regenerate the Service: After making changes, regenerate the service and activate it to ensure that the changes take effect.
  Check Annotations: If you are using annotations, ensure that they are correctly defined for the property in question.
  
  Related Information:
  
  Transaction Codes: 
  
  SEGW: SAP Gateway Service Builder, where you can define and manage OData services.
  SE80: Object Navigator, for checking the implementation of the service.
  
  
  OData Documentation: Review SAP documentation on OData services and the specific error messages for more context.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on this error.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting the SAP Community for further assistance.