/IWFND/CM_MGW_RT113 - Complex type name: '&1' already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_MGW_RT -

• Message number: 113

• Message text: Complex type name: '&1' already exists

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.

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AnswerBot

• What is the cause and solution for SAP error message /IWFND/CM_MGW_RT113 - Complex type name: '&1' already exists ?

  The SAP error message /IWFND/CM_MGW_RT113 indicates that there is a conflict with the naming of a complex type in the OData service. Specifically, it means that a complex type with the name specified in the error message (&1) already exists in the service definition.
  Cause:
  
  Duplicate Definition: The most common cause of this error is that the same complex type has been defined multiple times in the same OData service or in different versions of the service.
  Importing Artifacts: If you are importing artifacts (like service definitions or metadata) that contain complex types, and those types already exist in the target system, this error can occur.
  Namespace Conflicts: If there are namespace issues where the same complex type name is used in different namespaces, it can lead to this error.
  
  Solution:
  
  Check for Duplicates: Review the definitions of your OData service to ensure that the complex type is not defined more than once. You can do this by checking the service's metadata or the corresponding ABAP classes.
  Rename Complex Types: If you find that there are indeed duplicates, consider renaming one of the complex types to avoid the conflict.
  Delete Unused Types: If there are complex types that are no longer in use, you can delete them from the service definition.
  Check Import/Export: If you are importing or exporting service definitions, ensure that you are not inadvertently bringing in duplicate definitions. You may need to adjust your import settings or clean up the definitions before importing.
  Namespace Management: Ensure that your complex types are properly namespaced to avoid conflicts with other types. This can help prevent naming collisions.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE80 (Object Navigator) or SE11 (Data Dictionary) to inspect the definitions of your complex types.
  OData Service Maintenance: Use transaction /IWFND/MAINT_SERVICE to manage your OData services and check for any inconsistencies.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance on managing complex types in OData services.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service is functioning correctly.