How To Fix /IWFND/CM_MGW_RT155 - Characters 'SPACE' and '/.,()'"=_%*-+_¯' are not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_MGW_RT -

• Message number: 155

• Message text: Characters 'SPACE' and '/.,()'"=_%*-+_¯' are not allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_MGW_RT155 - Characters 'SPACE' and '/.,()'"=_%*-+_¯' are not allowed ?

  The SAP error message /IWFND/CM_MGW_RT155 indicates that certain characters are not allowed in the context of an OData service or a related operation. This error typically arises when you are trying to use special characters in a request, such as in a URL, query parameters, or data payloads, which are not permitted by the OData protocol or the specific implementation in SAP.
  Cause:
  The error is triggered when the input data contains characters that are not allowed. The specific characters mentioned in the error message include:
  
  Space
  Special characters: /, ., ,, (, ), " =, _, %, *, -, +, and ¯
  
  These characters may be present in:
  
  Query parameters
  URL paths
  Data fields in the request body
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Input Data: Review the data you are sending in your request. Ensure that none of the disallowed characters are present in the fields or parameters.
  
  
  URL Encoding: If you need to include special characters in your URL, make sure to URL-encode them. For example, spaces should be replaced with %20, and other special characters should be encoded according to their respective codes.
  
  
  Modify Data Fields: If the error is related to data fields, consider modifying the input to remove or replace the disallowed characters. For example, if you are sending a name or description, ensure it does not contain any of the restricted characters.
  
  
  Check OData Service Implementation: If you are developing or maintaining an OData service, review the service implementation to ensure that it correctly handles input validation and sanitization.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific OData service you are using to understand any additional constraints or requirements regarding input data.
  
  
  Related Information:
  
  OData Protocol: Familiarize yourself with the OData protocol specifications, which outline the rules for constructing requests and responses, including allowed characters.
  SAP Notes: Check for any relevant SAP Notes or Knowledge Base Articles that may provide additional context or solutions for this error.
  Debugging Tools: Use debugging tools or logs to trace the request and identify exactly where the invalid characters are being introduced.
  
  By following these steps, you should be able to identify the source of the error and implement a solution to avoid it in the future.