How To Fix S#640 - Specify a program ID

SAP Error Message - Details

• Message type: E = Error

• Message class: S# -

• Message number: 640

• Message text: Specify a program ID

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 S#640 - Specify a program ID ?

  The SAP error message S#640, which states "Specify a program ID," typically occurs in the context of SAP's RFC (Remote Function Call) or when dealing with external systems that need to connect to SAP. This error indicates that a required program ID has not been specified in the configuration.
  Cause:
  The error usually arises due to one of the following reasons:
  
  Missing Program ID: The program ID that is supposed to be used for the RFC connection is not defined in the SAP system.
  Incorrect Configuration: The configuration settings for the RFC destination or the external system may be incomplete or incorrect.
  Connection Issues: There may be issues with the connection setup between the SAP system and the external application.
  
  Solution:
  To resolve the S#640 error, you can follow these steps:
  
  
  Define the Program ID:
  
  Go to transaction code SM59 (RFC Destinations).
  Check the configuration of the RFC destination you are using.
  Ensure that the Program ID is specified correctly in the settings. If it is missing, you need to add it.
  
  
  
  Check the External System Configuration:
  
  If you are connecting to an external system (like a Java application), ensure that the external system is configured to use the same Program ID that you defined in SAP.
  Make sure that the external application is correctly set up to initiate the connection to SAP.
  
  
  
  Review the Connection Settings:
  
  Verify that all other connection parameters (like user credentials, connection type, etc.) are correctly configured.
  Test the connection from the external system to ensure that it can reach the SAP system.
  
  
  
  Check for Network Issues:
  
  Ensure that there are no network issues preventing the external system from connecting to the SAP system.
  Check firewall settings and network configurations.
  
  
  
  Consult SAP Documentation:
  
  If the issue persists, refer to SAP's official documentation or support resources for more detailed troubleshooting steps related to your specific version of SAP.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  SM59: For managing RFC destinations.
  SMGW: For monitoring the gateway and checking if the program ID is registered.
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC connections and program IDs.
  Logs: Check the system logs (transaction SM21) for any additional error messages that may provide more context about the issue.
  
  By following these steps, you should be able to resolve the S#640 error and establish a successful connection between your SAP system and the external application.