How To Fix R3070 - *** Error when connecting BW to the source system ***

SAP Error Message - Details

• Message type: E = Error

• Message class: R3 - Service API messages

• Message number: 070

• Message text: *** Error when connecting BW to the source system ***

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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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message R3070 - *** Error when connecting BW to the source system *** ?

  The SAP error message R3070, which indicates an error when connecting BW (Business Warehouse) to the source system, can arise from various causes. Here are some common causes, potential solutions, and related information:
  Causes:
  
  Network Issues: There may be network connectivity problems between the BW system and the source system.
  Authorization Problems: The user credentials used for the connection may not have the necessary authorizations to access the source system.
  Incorrect Connection Parameters: The connection parameters (like hostname, port, client number, etc.) may be incorrectly configured in the BW system.
  Source System Down: The source system may be down or not reachable due to maintenance or other issues.
  RFC Destination Issues: The RFC (Remote Function Call) destination used to connect to the source system may be incorrectly configured or inactive.
  Version Compatibility: There may be compatibility issues between the BW system and the source system, especially if they are on different versions or releases.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the BW and source system is stable and operational. You can use tools like ping or telnet to test connectivity.
  Verify User Authorizations: Check that the user ID used for the connection has the necessary authorizations in both the BW and source systems.
  Review Connection Parameters: Go to the transaction SM59 in the BW system and verify the RFC destination settings. Ensure that the hostname, port, and other parameters are correct.
  Check Source System Status: Ensure that the source system is up and running. You can log into the source system to verify its status.
  Test RFC Connection: In transaction SM59, test the RFC connection to see if it is working correctly. If there are errors, they will provide more details on what might be wrong.
  Check for Version Compatibility: Ensure that both systems are compatible in terms of versions and releases. If necessary, consult SAP notes or documentation for compatibility information.
  Review Logs: Check the system logs in both the BW and source systems for any additional error messages that might provide more context on the issue.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that might address specific issues related to error R3070.
  Documentation: Review the official SAP documentation for BW and the source system for any specific configuration or setup requirements.
  Community Forums: Consider checking SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.