How To Fix /IWBEP/CM_MGW_RT149 - Property '&2' of data object '&1' has no Internal type assigned

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 149

• Message text: Property '&2' of data object '&1' has no Internal type assigned

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_MGW_RT149 - Property '&2' of data object '&1' has no Internal type assigned ?

  The SAP error message /IWBEP/CM_MGW_RT149 indicates that there is an issue with the data model in your OData service. Specifically, it means that a property of a data object does not have an internal type assigned, which is necessary for the OData service to function correctly.
  Cause:
  
  Missing Type Definition: The property in question is defined in the data model but does not have an associated internal type. This can happen if the property is not properly defined in the underlying data structure or if there is a mismatch between the data model and the actual data source.
  Incorrect Mapping: If the mapping between the data source and the OData service is not correctly set up, it can lead to properties being recognized without a valid type.
  Model Changes: If there have been recent changes to the data model or the underlying database structure, it may lead to inconsistencies in the type definitions.
  
  Solution:
  
  Check Data Model: Review the data model in the SAP Gateway Service Builder (transaction code SEGW) to ensure that all properties are correctly defined with appropriate types.
  Update Metadata: If you have made changes to the underlying data structure, ensure that you regenerate the metadata for the OData service. This can be done by right-clicking on the service in the Service Builder and selecting "Regenerate Runtime Objects."
  Check Data Source: Verify that the data source (e.g., database table, structure) has the correct field definitions and types that correspond to the properties defined in the OData service.
  Debugging: If the issue persists, you may need to debug the OData service to identify where the property is being referenced without a type. This can help pinpoint the exact location of the problem.
  Re-implement the Property: If the property is not needed, consider removing it from the data model. If it is needed, ensure that it is correctly defined and mapped.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SEGW (Service Builder) and /IWBEP/REG_SERVICE (Register OData Service) to manage your OData services.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on handling data model issues.
  Documentation: Refer to the SAP Gateway documentation for best practices on defining data models and OData services.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service functions correctly.