How To Fix HTTP_CHW_UI_MSG205 - Wrong RegEx used

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 205

• Message text: Wrong RegEx used

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message HTTP_CHW_UI_MSG205 - Wrong RegEx used ?

  The SAP error message HTTP_CHW_UI_MSG205 Wrong RegEx used typically indicates that there is an issue with a regular expression (RegEx) that has been defined in the context of a web application or service within the SAP environment. This error can occur in various scenarios, such as when validating input fields, defining routing rules, or configuring URL patterns.
  Cause
  The error is usually caused by one of the following:
  
  Invalid Regular Expression Syntax: The RegEx pattern defined may contain syntax errors or unsupported constructs.
  Incompatibility with SAP's RegEx Engine: The RegEx used may not be compatible with the specific RegEx engine that SAP uses, which can differ from standard JavaScript or other programming languages.
  Logical Errors: The RegEx may not logically match the intended input, leading to unexpected behavior.
  
  Solution
  To resolve the HTTP_CHW_UI_MSG205 Wrong RegEx used error, you can follow these steps:
  
  
  Review the Regular Expression:
  
  Check the syntax of the RegEx for any errors. You can use online RegEx validators to test your pattern.
  Ensure that the RegEx is compatible with the SAP environment. Refer to SAP documentation for any specific limitations or requirements.
  
  
  
  Simplify the RegEx:
  
  If the RegEx is complex, try simplifying it to see if the error persists. Start with a basic pattern and gradually add complexity.
  
  
  
  Test with Sample Data:
  
  Use sample input data to test the RegEx. This can help identify if the pattern is matching as expected.
  
  
  
  Consult SAP Documentation:
  
  Look for any specific guidelines or examples in the SAP documentation related to RegEx usage in the context you are working with.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date, as there may be patches or updates that address known issues with RegEx handling.
  
  
  
  Seek Help from SAP Community:
  
  If you are unable to resolve the issue, consider reaching out to the SAP community forums or support for assistance. Provide details about the RegEx you are using and the context in which the error occurs.
  
  
  
  Related Information
  
  SAP Documentation: Always refer to the official SAP documentation for the specific version of the software you are using, as it may contain relevant information about RegEx usage.
  Regular Expression Resources: Familiarize yourself with RegEx syntax and best practices through online resources, tutorials, and documentation.
  SAP Notes: Check SAP Notes for any known issues or fixes related to the error message you are encountering.
  
  By following these steps, you should be able to identify and correct the issue causing the HTTP_CHW_UI_MSG205 Wrong RegEx used error in your SAP environment.