How To Fix TN630 - Target system inst. no. &1 does not match local inst. no. &2

SAP Error Message - Details

• Message type: E = Error

• Message class: TN - Support Package Manager (SPAM) Messages

• Message number: 630

• Message text: Target system inst. no. &1 does not match local inst. no. &2

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 TN630 - Target system inst. no. &1 does not match local inst. no. &2 ?

  The SAP error message TN630 indicates a mismatch between the target system instance number and the local instance number. This typically occurs during a process where a connection to another SAP system is being established, such as during remote function calls (RFC) or when trying to access a different SAP system.
  Cause:
  The error message TN630 is caused by one of the following reasons:
  
  Configuration Mismatch: The target system's instance number does not match the instance number configured in the local system. This can happen if the target system has been changed or if the configuration settings in the local system are incorrect.
  Incorrect RFC Destination: The RFC destination may be incorrectly configured, pointing to the wrong instance or system.
  System Copy or Migration: If a system copy or migration has occurred, the instance numbers may not have been updated correctly in the configuration.
  
  Solution:
  To resolve the TN630 error, you can follow these steps:
  
  
  Check RFC Destination:
  
  Go to transaction code SM59 (RFC Destinations).
  Locate the RFC destination that is causing the issue.
  Verify that the target system's instance number is correctly configured in the RFC destination settings.
  
  
  
  Verify Instance Numbers:
  
  Check the instance number of the target system. You can do this by logging into the target system and checking the instance number in the system status (transaction SM51).
  Ensure that the instance number in the RFC destination matches the instance number of the target system.
  
  
  
  Update Configuration:
  
  If there is a mismatch, update the RFC destination with the correct instance number.
  Save the changes and test the connection again.
  
  
  
  Check for System Changes:
  
  If there have been any recent changes to the systems (like a system copy, upgrade, or migration), ensure that all configurations are updated accordingly.
  
  
  
  Test Connection:
  
  After making the necessary changes, use the "Connection Test" feature in SM59 to verify that the connection to the target system is successful.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: Manage RFC destinations.
  SM51: Display instances of the SAP system.
  SICF: Check and manage HTTP services, if applicable.
  
  
  
  Documentation: Refer to SAP Help documentation for more details on configuring RFC destinations and troubleshooting connection issues.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to TN630 or RFC configuration.
  
  
  By following these steps, you should be able to resolve the TN630 error and establish a successful connection to the target SAP system.