How To Fix UMC122 - RFC error (&1) &2&3&4

SAP Error Message - Details

• Message type: E = Error

• Message class: UMC - General Messages

• Message number: 122

• Message text: RFC error (&1) &2&3&4

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message UMC122 - RFC error (&1) &2&3&4 ?

  The SAP error message UMC122, which indicates an RFC (Remote Function Call) error, typically arises in the context of communication issues between SAP systems or between an SAP system and an external system. The message format you provided includes placeholders (&1, &2, &3, &4) that would be replaced with specific details about the error.
  Causes of UMC122 RFC Error
  
  
  Network Issues: Problems with the network connection between the systems can lead to RFC errors. This could be due to firewalls, routing issues, or network outages.
  
  
  Configuration Errors: Incorrect configuration of the RFC destination in the SAP system can cause this error. This includes incorrect settings in transaction SM59.
  
  
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to perform the requested operation.
  
  
  System Availability: The target system may be down or not reachable, leading to an inability to establish an RFC connection.
  
  
  Resource Limitations: The system may be experiencing resource limitations, such as memory or CPU constraints, which can affect its ability to process RFC calls.
  
  
  Version Compatibility: Incompatibility between different versions of SAP systems can also lead to RFC errors.
  
  
  Solutions to UMC122 RFC Error
  
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems involved. You can use tools like ping or traceroute to diagnose network issues.
  
  
  Verify RFC Destination: Go to transaction SM59 and check the configuration of the RFC destination. Ensure that the connection parameters (such as the target host, system number, and client) are correct.
  
  
  Check Authorizations: Verify that the user credentials used for the RFC connection have the necessary authorizations. You can check this in transaction SU01.
  
  
  System Status: Check the status of the target system to ensure it is up and running. You can do this by logging into the target system or checking system logs.
  
  
  Review System Logs: Look at the system logs (transaction SM21) and the developer trace files (transaction ST11) for any additional error messages that might provide more context.
  
  
  Resource Monitoring: Monitor system resources to ensure that there are no bottlenecks affecting performance. You can use transaction ST02 for buffer analysis and ST04 for database performance.
  
  
  Check for Updates: Ensure that both systems are running compatible versions of SAP and that any necessary patches or updates have been applied.
  
  
  Related Information
  
  
  Transaction Codes: 
  
  SM59: RFC Destinations
  SU01: User Maintenance
  SM21: System Log
  ST11: Developer Traces
  ST02: Tune Buffers
  ST04: Database Performance
  
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address specific issues related to RFC errors.
  
  
  Documentation: Refer to the official SAP documentation for more detailed information on RFC connections and troubleshooting.
  
  
  If the issue persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.