How To Fix /IWBEP/CM_MGW_URM029 - LastName contains invalid characters

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_URM -

• Message number: 029

• Message text: LastName contains invalid characters

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_URM029 - LastName contains invalid characters ?

  The SAP error message /IWBEP/CM_MGW_URM029 indicating that "LastName contains invalid characters" typically arises in the context of SAP Gateway services, particularly when dealing with OData services. This error suggests that the value provided for the "LastName" field contains characters that are not allowed or expected by the system.
  Cause:
  
  Invalid Characters: The "LastName" field may contain special characters, symbols, or whitespace that are not permitted. For example, characters like @, #, $, or even leading/trailing spaces can trigger this error.
  Data Type Mismatch: The data type defined for the "LastName" field in the OData service may not match the input data.
  Validation Rules: There may be specific validation rules defined in the backend that restrict the characters that can be used in the "LastName" field.
  
  Solution:
  
  Check Input Data: Review the value being sent for the "LastName" field. Ensure that it only contains valid characters (typically letters, and possibly hyphens or apostrophes).
  Trim Whitespace: Remove any leading or trailing whitespace from the input value.
  Character Set Compliance: Ensure that the input complies with the expected character set defined in the OData service.
  Modify Input: If the input contains invalid characters, modify it to conform to the expected format before sending the request.
  Backend Validation: If you have access to the backend, check the validation rules for the "LastName" field to understand what characters are allowed.
  
  Related Information:
  
  OData Services: This error is common in OData services where strict validation is enforced on input data.
  SAP Gateway: Familiarize yourself with the SAP Gateway framework, as it handles the communication between the front-end and back-end systems.
  Debugging: If you have access to the SAP system, you can use transaction codes like /IWFND/ERROR_LOG to check for more detailed error logs that might provide additional context.
  Documentation: Refer to the SAP documentation for the specific OData service you are using to understand the expected input formats and validation rules.
  
  By addressing the input data and ensuring it meets the expected criteria, you should be able to resolve the error message /IWBEP/CM_MGW_URM029.