How To Fix /IWFND/CM_DESIGNTIME134 - Function module name prefix must not be empty

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_DESIGNTIME -

• Message number: 134

• Message text: Function module name prefix must not be empty

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_DESIGNTIME134 - Function module name prefix must not be empty ?

  The SAP error message /IWFND/CM_DESIGNTIME134 with the description "Function module name prefix must not be empty" typically occurs in the context of SAP Gateway and OData service development. This error indicates that there is an issue with the configuration of the function module that is supposed to be used in the OData service.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Missing Function Module Prefix: The function module name prefix is not defined in the service configuration. This prefix is necessary for the system to identify the function modules that are associated with the OData service.
  Incorrect Service Configuration: The OData service might not be properly configured, leading to the absence of a valid function module prefix.
  Transport Issues: If the service was transported from one system to another, the configuration might not have been correctly set up in the target system.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Service Configuration:
  
  Go to the SAP Gateway Service Builder (transaction code SEGW).
  Open the relevant project and check the service configuration.
  Ensure that the function module name prefix is correctly defined in the service settings.
  
  
  
  Define Function Module Prefix:
  
  If the prefix is missing, you can define it by navigating to the service configuration and entering a valid prefix for the function modules.
  The prefix is usually a combination of the namespace and the project name.
  
  
  
  Regenerate the Service:
  
  After making changes to the configuration, regenerate the service by right-clicking on the project and selecting "Generate".
  This will update the service with the new configuration.
  
  
  
  Check for Transport Issues:
  
  If the service was transported, ensure that all necessary objects and configurations were included in the transport request.
  You may need to manually adjust the configuration in the target system.
  
  
  
  Test the Service:
  
  After making the necessary changes, test the OData service to ensure that it is functioning correctly without the error.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SEGW: Service Builder for OData services.
  IWFND/MAINT_SERVICE: To maintain OData services.
  
  
  Documentation: Refer to SAP Help documentation for OData services and SAP Gateway for more detailed information on service configuration and troubleshooting.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to this error message.
  
  By following these steps, you should be able to resolve the error and successfully configure your OData service.