How To Fix 1R545 - Error &1 while reading from HTTP server

SAP Error Message - Details

• Message type: E = Error

• Message class: 1R - SAP Knowledge Provider

• Message number: 545

• Message text: Error &1 while reading from HTTP server

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 1R545 - Error &1 while reading from HTTP server ?

  The SAP error message 1R545 ("Error &1 while reading from HTTP server") typically indicates that there is an issue with the HTTP communication between the SAP system and an external HTTP server. This error can arise due to various reasons, including network issues, server unavailability, incorrect URL, or configuration problems.
  Causes:
  
  Network Issues: There may be connectivity problems between the SAP system and the HTTP server.
  Server Unavailability: The HTTP server may be down or not responding.
  Incorrect URL: The URL configured in the SAP system may be incorrect or malformed.
  Timeouts: The request may be timing out due to slow response from the server.
  Firewall/Proxy Issues: Firewalls or proxy settings may be blocking the connection.
  Authentication Issues: If the HTTP server requires authentication, and the credentials are not provided or are incorrect, this can lead to errors.
  SSL/TLS Issues: If the connection is secured (HTTPS), there may be issues with SSL certificates or configurations.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the SAP system can reach the HTTP server. You can use tools like ping or telnet to test connectivity.
  Verify Server Status: Check if the HTTP server is up and running. You can try accessing the URL directly from a web browser or using tools like curl.
  Review URL Configuration: Double-check the URL configured in the SAP system for correctness.
  Increase Timeout Settings: If the server is slow, consider increasing the timeout settings in the SAP system.
  Check Firewall/Proxy Settings: Ensure that there are no firewall rules or proxy settings blocking the connection.
  Validate Authentication: If the server requires authentication, ensure that the correct credentials are being used.
  SSL/TLS Configuration: If using HTTPS, ensure that the SSL certificates are valid and properly configured in the SAP system.
  
  Related Information:
  
  Transaction Codes: You may want to check the configuration in transaction codes like SOAMANAGER (for web service configuration) or SMICM (for Internet Communication Manager).
  Logs: Check the SAP application logs (transaction SLG1) for more detailed error messages that can provide additional context.
  SAP Notes: Look for relevant SAP Notes in the SAP Support Portal that may address specific issues related to this error.
  Documentation: Review the SAP documentation for HTTP communication and web service configuration for best practices.
  
  If the issue persists after checking the above points, it may be beneficial to involve your network or system administrator for further investigation.