How To Fix CACSDDIC003 - No connection to system &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CACSDDIC - Messages for Access of Data Dictionary

• Message number: 003

• Message text: No connection to system &1

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 CACSDDIC003 - No connection to system &1 ?

  The SAP error message "CACSDDIC003 No connection to system &1" typically indicates that there is an issue with the connection to the specified SAP system. This error can occur in various scenarios, such as when trying to access a system through a client, during data transfer, or when using certain SAP applications.
  Causes:
  
  Network Issues: There may be network connectivity problems between the client and the SAP server.
  System Down: The target SAP system might be down or not running.
  Incorrect Configuration: The connection parameters (like the system ID, instance number, or host name) may be incorrectly configured in the SAP GUI or in the connection settings.
  Firewall Restrictions: Firewalls or security settings may be blocking the connection to the SAP system.
  SAP Router Issues: If you are using an SAP router, there may be issues with the router configuration or it may be down.
  User Authorization: The user may not have the necessary authorizations to connect to the specified system.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection is stable and that you can reach the SAP server. You can use tools like ping or tracert to test connectivity.
  Verify System Status: Check if the SAP system is up and running. You can do this by accessing the SAP system through other means or checking with your system administrator.
  Review Connection Parameters: Double-check the connection settings in the SAP GUI or any other client you are using. Ensure that the system ID, instance number, and host name are correct.
  Firewall Settings: If applicable, check the firewall settings to ensure that they allow traffic to and from the SAP server.
  SAP Router Configuration: If you are using an SAP router, verify that it is correctly configured and operational.
  User Authorizations: Ensure that the user account you are using has the necessary permissions to access the specified SAP system.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for the error code in the SAP Support Portal.
  System Logs: Review the system logs (transaction SM21) for any additional error messages or warnings that might provide more context about the connection issue.
  SAP Community: Consider searching or posting in the SAP Community forums for additional insights or similar experiences from other users.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or technical support for further investigation.