How To Fix /SMB/MD_AS_CUST030 - Error when calling RFC &1: &2&3&4

SAP Error Message - Details

• Message type: E = Error

• Message class: /SMB/MD_AS_CUST -

• Message number: 030

• Message text: Error when calling RFC &1: &2&3&4

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SMB/MD_AS_CUST030 - Error when calling RFC &1: &2&3&4 ?

  The SAP error message /SMB/MD_AS_CUST030 typically indicates an issue related to the RFC (Remote Function Call) when trying to access a specific function module or service. This error can occur in various contexts, often related to the SAP Business One integration or other SAP modules that rely on RFC calls.
  Cause:
  The error message /SMB/MD_AS_CUST030 can be caused by several factors, including:
  
  RFC Destination Issues: The RFC destination may not be correctly configured, or it may be pointing to an incorrect or inactive system.
  Authorization Problems: The user executing the RFC call may not have the necessary authorizations to perform the action.
  Network Issues: There may be network connectivity problems between the systems involved in the RFC call.
  Function Module Issues: The function module being called may not exist, or it may have been changed or deleted.
  Parameter Mismatch: The parameters being passed to the RFC call may not match the expected format or type.
  
  Solution:
  To resolve the /SMB/MD_AS_CUST030 error, you can follow these steps:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Verify that the RFC destination is correctly configured and that the connection is working. Test the connection to ensure it is active.
  
  
  
  Review Authorizations:
  
  Ensure that the user executing the RFC call has the necessary authorizations. You can check this in transaction SU53 after the error occurs to see if there are any authorization issues.
  
  
  
  Network Connectivity:
  
  Check for any network issues that might be preventing the RFC call from being executed. Ensure that both systems can communicate with each other.
  
  
  
  Function Module Verification:
  
  Verify that the function module being called exists and is active. You can check this in transaction SE37 or SE80.
  
  
  
  Parameter Validation:
  
  Review the parameters being passed to the RFC call. Ensure that they match the expected types and formats as defined in the function module.
  
  
  
  Check Logs:
  
  Review the system logs (transaction SM21) and the application logs (transaction SLG1) for any additional error messages or information that might provide more context about the issue.
  
  
  
  Consult Documentation:
  
  If the error persists, consult the SAP documentation or support resources for more specific guidance related to the function module or integration scenario you are working with.
  
  
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide patches or updates.
  Community Forums: Consider searching or posting in SAP community forums or discussion groups for additional insights from other users who may have encountered the same issue.
  SAP Support: If you are unable to resolve the issue, consider reaching out to SAP Support for assistance, providing them with the error details and any relevant logs.
  
  By following these steps, you should be able to diagnose and resolve the /SMB/MD_AS_CUST030 error effectively.