How To Fix HTTP_CHW_MSG201 - The url &1 contains cr_lf and cannot be processed.

SAP Error Message - Details

• Message type: E = Error

• Message class: HTTP_CHW_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

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Smart SAP Assistant

• What is the cause and solution for SAP error message HTTP_CHW_MSG201 - The url &1 contains cr_lf and cannot be processed. ?

  The SAP error message HTTP_CHW_MSG201 indicates that the URL you are trying to process contains carriage return (CR) and line feed (LF) characters, which are not allowed in URLs. This error typically occurs when there is an issue with the formatting of the URL being used in an HTTP request.
  Cause:
  
  Improper URL Formatting: The URL may have been constructed incorrectly, possibly due to concatenation of strings that include newline characters.
  User Input: If the URL is being generated based on user input, the user may have inadvertently included line breaks or other invalid characters.
  Data Source Issues: If the URL is being pulled from a database or external source, the data may contain unexpected characters.
  
  Solution:
  
  
  Check URL Construction: Review the code or logic that constructs the URL. Ensure that it does not include any CR or LF characters. You can use string manipulation functions to remove or replace these characters.
  Example in ABAP:
  REPLACE ALL OCCURRENCES OF cl_abap_char_utilities=>cr_lf IN string WITH ''.
  
  
  Validate User Input: If the URL is based on user input, implement validation to ensure that the input does not contain any invalid characters. You can use regular expressions or string checks to filter out CR and LF characters.
  
  
  Sanitize Data Sources: If the URL is being generated from a database or external source, ensure that the data is sanitized before being used to construct the URL. This may involve cleaning up the data in the source or applying transformations in your code.
  
  
  Debugging: If the issue persists, add logging or debugging statements to capture the exact URL being processed when the error occurs. This can help identify where the CR and LF characters are being introduced.
  
  
  Related Information:
  
  HTTP Standards: According to the URI specification (RFC 3986), certain characters, including CR and LF, are not allowed in URLs. Understanding these standards can help in constructing valid URLs.
  SAP Documentation: Refer to SAP's official documentation for more details on HTTP communication and error handling.
  Community Forums: Check SAP community forums or support channels for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to resolve the HTTP_CHW_MSG201 error and ensure that your URLs are properly formatted for processing.