How To Fix /IWBEP/CM_V4_MED107 - Invalid open type attribute on entity type '&1' with base type '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 107

• Message text: Invalid open type attribute on entity type '&1' with base type '&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_MED107 - Invalid open type attribute on entity type '&1' with base type '&2' ?

  The SAP error message /IWBEP/CM_V4_MED107 indicates that there is an issue with the open type attribute in an entity type within an OData service. This error typically arises when the OData service is trying to process an entity type that has an invalid or unsupported open type attribute configuration.
  Cause:
  
  Invalid Open Type Configuration: The entity type specified in the error message has an open type attribute that is not correctly defined. Open types are used in OData to allow for dynamic properties that are not predefined in the entity type.
  Base Type Issues: The base type of the entity may not support the open type attributes, or there may be a mismatch in the expected structure.
  Model Definition Errors: There could be issues in the way the OData model is defined, such as incorrect annotations or missing properties.
  
  Solution:
  
  Check Entity Type Definition: Review the definition of the entity type and ensure that the open type attributes are correctly defined. Make sure that the attributes are compatible with the base type.
  Validate Base Type: Ensure that the base type of the entity supports the open type attributes. If necessary, modify the base type to include the required properties.
  Review OData Model: Check the OData model configuration for any inconsistencies or errors. Ensure that all properties and annotations are correctly defined.
  Debugging: Use transaction codes like /IWFND/ERROR_LOG to check for additional error messages that may provide more context on the issue.
  Regenerate Service: If changes are made to the entity type or model, regenerate the OData service and refresh the metadata to ensure that the changes are applied.
  
  Related Information:
  
  Open Type Attributes: Open types allow for flexibility in OData services by enabling the addition of properties that are not explicitly defined in the entity type. They are typically used in scenarios where the structure of the data can vary.
  OData Service Configuration: Familiarize yourself with the OData service configuration in SAP, including how to define entity types, properties, and relationships.
  SAP Notes and Documentation: Check SAP Notes for any known issues or updates related to this error message. The SAP Help Portal may also provide additional guidance on OData service development and troubleshooting.
  
  By following these steps, you should be able to identify and resolve the issue causing the /IWBEP/CM_V4_MED107 error message.