How To Fix HTTP_CSP_UI_MSG201 - The url &1 contains cr_lf and cannot be processed.

SAP Error Message - Details

• Message type: E = Error

• Message class: HTTP_CSP_UI_MSG - strings for output in http alv

• Message number: 201

• Message text: The url &1 contains cr_lf and cannot be processed.

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 HTTP_CSP_UI_MSG201 - The url &1 contains cr_lf and cannot be processed. ?

  The SAP error message HTTP_CSP_UI_MSG201 indicates that the URL being processed contains carriage return (CR) and line feed (LF) characters, which are not allowed in URLs. This error typically occurs in web applications or services that use the SAP Web Application Server (WAS) or SAP NetWeaver.
  Cause:
  The presence of CR (\r) and LF (\n) characters in the URL can occur due to various reasons, such as:
  
  Improperly formatted URLs being generated by the application.
  User input that includes line breaks or carriage returns.
  Issues in the configuration of the web server or application server that processes the URL.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check URL Generation: Review the code or configuration that generates the URL. Ensure that it does not include any CR or LF characters. This may involve sanitizing user input or ensuring that URLs are constructed correctly.
  
  
  Input Validation: Implement input validation to prevent users from entering line breaks or carriage returns in fields that are used to construct URLs. This can be done through front-end validation (JavaScript) and back-end validation (server-side checks).
  
  
  Debugging: If the error occurs in a specific transaction or application, enable debugging or logging to capture the exact URL that is causing the issue. This can help identify where the CR and LF characters are being introduced.
  
  
  Configuration Review: Check the configuration of the web server or application server to ensure that it is set up correctly and is not inadvertently modifying URLs.
  
  
  Testing: After making changes, thoroughly test the application to ensure that the error is resolved and that URLs are being processed correctly.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review the SAP documentation for best practices on URL handling and web application development.
  Community Forums: Engage with the SAP community forums or support channels for additional insights or similar experiences from other users.
  
  By following these steps, you should be able to identify and resolve the issue causing the HTTP_CSP_UI_MSG201 error in your SAP environment.