Message type: E = Error
Message class:  /IWFND/MED_SVC_MU_LA -  
Message number: 011
Message text: Default operation '&1' not defined
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The SAP error message /IWFND/MED_SVC_MU_LA011 Default operation '&1' not defined typically occurs in the context of SAP Gateway and OData services. This error indicates that a default operation (like GET, POST, PUT, DELETE) for a specific entity or service is not defined in the service implementation.
Cause: Missing Operation Definition: The OData service does not have a defined operation for the specified entity or action. Service Registration Issues: The service might not be properly registered or activated in the SAP Gateway. Incorrect Service URL: The URL being accessed may not correspond to any defined operation in the OData service. Authorization Issues: The user may not have the necessary authorizations to access the operation. Model Issues: The data model might not be correctly defined, leading to missing operations.
Solution: Check Service Implementation: Go to the transaction code SEGW (Gateway Service Builder). Open the relevant service and check if the operation (GET, POST, etc.) is defined for the entity type you are
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