How To Fix E0850 - IDoc transfer: Logon to R/2 System failed (no confirmation)

SAP Error Message - Details

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 850

• Message text: IDoc transfer: Logon to R/2 System failed (no confirmation)

What causes this issue?

The SAP system could not log on to the R/2 System. The confirmation from
the R/2 System was not received.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Test the CPI-C connection to the R/2 System.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E0850 - IDoc transfer: Logon to R/2 System failed (no confirmation) ?

  The SAP error message E0850 indicates that there was a failure in logging into the R/2 system during an IDoc transfer. This can occur for several reasons, and understanding the cause is essential for troubleshooting and resolving the issue.
  Causes:
  
  Incorrect Credentials: The username or password used for the R/2 system may be incorrect.
  Network Issues: There may be network connectivity problems between the SAP system and the R/2 system.
  R/2 System Down: The R/2 system may be down or not reachable at the time of the IDoc transfer.
  Configuration Issues: The RFC (Remote Function Call) destination may not be configured correctly in the SAP system.
  Authorization Issues: The user may not have the necessary authorizations to log into the R/2 system.
  IDoc Settings: There may be issues with the IDoc settings or the way the IDoc is being processed.
  
  Solutions:
  
  Verify Credentials: Check the username and password for the R/2 system. Ensure they are correct and that the user is active.
  Check Network Connectivity: Ensure that there is proper network connectivity between the SAP system and the R/2 system. You can use tools like ping or traceroute to diagnose network issues.
  Check R/2 System Status: Verify that the R/2 system is up and running. If it is down, you will need to restart it or contact the system administrator.
  Review RFC Configuration: Go to transaction SM59 in the SAP system and check the configuration of the RFC destination pointing to the R/2 system. Ensure that the connection parameters are correct.
  Check Authorizations: Ensure that the user has the necessary authorizations to access the R/2 system. You may need to consult with your security team to verify this.
  Review IDoc Settings: Check the IDoc settings and ensure that they are configured correctly. You can use transaction WE02 to monitor IDoc processing and identify any issues.
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: To check and configure RFC destinations.
  WE02: To monitor IDocs and check their status.
  SU01: To manage user accounts and check authorizations.
  
  
  
  Logs: Check the application logs (transaction SLG1) for any additional error messages or details that may provide more context about the failure.
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to IDoc transfers and R/2 system connectivity.
  
  
  By following these steps, you should be able to identify the cause of the E0850 error and implement the appropriate solution. If the issue persists, consider reaching out to SAP support for further assistance.