How To Fix 0Q053 - Unexpected return code &1 while setting connection

SAP Error Message - Details

• Message type: E = Error

• Message class: 0Q - Microsoft SQL Server Porting

• Message number: 053

• Message text: Unexpected return code &1 while setting connection

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 0Q053 - Unexpected return code &1 while setting connection ?

  The SAP error message 0Q053 with the description "Unexpected return code &1 while setting connection" typically indicates an issue with the connection to a database or an external system. This error can occur in various contexts, such as when trying to connect to a database, a web service, or another SAP system.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the target system (e.g., database or external service).
  Configuration Errors: Incorrect configuration settings in the SAP system or the target system can lead to connection failures.
  Authentication Problems: Issues with user credentials or permissions can prevent successful connections.
  Database Availability: The target database may be down or not reachable.
  Firewall Restrictions: Firewalls may be blocking the connection attempts.
  Resource Limitations: The target system may be experiencing resource limitations (e.g., too many connections).
  
  Solutions:
  
  Check Network Connectivity: Ensure that the SAP system can reach the target system. You can use tools like ping or telnet to test connectivity.
  Review Configuration Settings: Verify the connection parameters in the SAP system (e.g., database connection settings, service endpoints).
  Validate Credentials: Ensure that the user credentials used for the connection are correct and have the necessary permissions.
  Check Target System Status: Confirm that the target database or service is up and running. Check logs for any errors on the target system.
  Firewall and Security Settings: Review firewall rules and security settings to ensure that they allow traffic between the SAP system and the target system.
  Monitor Resource Usage: Check the resource usage on the target system to ensure it is not overloaded.
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Logs: Review the application logs (transaction SM21) and system logs (transaction SLG1) for more detailed error messages that may provide additional context.
  Transaction Codes: Use transaction codes like DBACOCKPIT or SM59 to check database connections and RFC destinations.
  Documentation: Refer to the official SAP documentation for the specific version of SAP you are using, as there may be version-specific considerations.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.