How To Fix /SAPAPO/CDPSOPT051 - Remote function call (RFC) unsuccessful

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/CDPSOPT -

• Message number: 051

• Message text: Remote function call (RFC) unsuccessful

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/CDPSOPT051 - Remote function call (RFC) unsuccessful ?

  The SAP error message /SAPAPO/CDPSOPT051 Remote function call (RFC) unsuccessful typically indicates that there was an issue with a remote function call in the SAP Advanced Planning and Optimization (APO) module. This error can occur for various reasons, and understanding the cause is essential for troubleshooting and resolving the issue.
  Possible Causes:
  
  Network Issues: There may be network connectivity problems between the systems involved in the RFC call.
  Authorization Issues: The user executing the RFC may not have the necessary authorizations to perform the operation.
  System Configuration: Incorrect configuration of the RFC destination or the system settings can lead to this error.
  System Performance: If the system is under heavy load or if there are performance issues, the RFC call may time out or fail.
  Function Module Issues: The function module being called may not exist, may be incorrectly implemented, or may have been changed or deleted.
  Transport Issues: If the function module was recently transported, there may be inconsistencies in the system.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues between the systems. You can use tools like ping or traceroute to diagnose connectivity.
  Review Authorizations: Verify that the user has the necessary authorizations to execute the RFC. You can check this in transaction SU53 after the error occurs.
  Validate RFC Destination: Use transaction SM59 to check the configuration of the RFC destination. Ensure that it is correctly set up and that the connection test is successful.
  Monitor System Performance: Check system performance using transaction SM50 or SM66 to see if there are any performance bottlenecks.
  Check Function Module: Use transaction SE37 to check the function module being called. Ensure it exists and is correctly implemented.
  Review Logs: Check the system logs (transaction SM21) and the application logs (transaction SLG1) for any additional error messages or warnings that could provide more context.
  Consult SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide patches or updates.
  
  Related Information:
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SU53: Authorization Check
  SM21: System Log
  SLG1: Application Log
  SE37: Function Module
  SM50/SM66: Process Overview
  
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance, providing them with detailed information about the error and the steps you have already taken.
  
  By following these steps, you should be able to identify the cause of the RFC error and implement a solution to resolve it.