How To Fix /IWBEP/CM_MGW_URM028 - FirstName contains invalid characters

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_URM -

• Message number: 028

• Message text: FirstName contains invalid characters

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_URM028 - FirstName contains invalid characters ?

  The SAP error message /IWBEP/CM_MGW_URM028 indicates that there is an issue with the input data for a field, specifically that the FirstName field contains invalid characters. This error typically arises in the context of SAP Gateway services, where data is being sent to or received from an OData service.
  Cause:
  
  Invalid Characters: The FirstName field may contain characters that are not allowed according to the defined data model or validation rules. This could include special characters, numbers, or even leading/trailing spaces.
  Data Type Mismatch: The data type expected for the FirstName field may not match the data being sent. For example, if the field is defined to accept only alphabetic characters, any numeric or special characters would trigger this error.
  Encoding Issues: If the data is being sent from a different system or application, there may be encoding issues that introduce invalid characters.
  
  Solution:
  
  Validate Input Data: Check the input data being sent to the OData service. Ensure that the FirstName field contains only valid characters (typically alphabetic characters). Remove any special characters, numbers, or whitespace that may be causing the issue.
  Check Data Model: Review the data model definition for the OData service to understand the expected format and constraints for the FirstName field. Make sure the data being sent adheres to these constraints.
  Error Handling: Implement error handling in the application that sends the data to catch and correct invalid input before it reaches the OData service.
  Testing: Test the service with valid data to ensure that the issue is resolved. You can use tools like Postman or SAP Gateway Client to simulate requests and validate responses.
  
  Related Information:
  
  SAP Gateway: This is a technology that allows you to connect devices, environments, and applications to SAP systems. Understanding how it handles data and validation can help in troubleshooting issues like this.
  OData Services: Familiarize yourself with OData service definitions and how they enforce data validation rules.
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message. Sometimes, there may be patches or updates that address specific validation issues.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.