How To Fix EEWMGBC228 - Key fields must be alphanumeric fields

SAP Error Message - Details

• Message type: E = Error

• Message class: EEWMGBC - GBC: GIS Business Connector

• Message number: 228

• Message text: Key fields must be alphanumeric fields

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 EEWMGBC228 - Key fields must be alphanumeric fields ?

  The SAP error message EEWMGBC228, which states "Key fields must be alphanumeric fields," typically occurs in the context of data entry or configuration in SAP systems, particularly when dealing with key fields in database tables or structures. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Data Type Mismatch: The error arises when a key field is defined with a data type that does not support alphanumeric characters. Key fields in SAP must be defined as character (CHAR) or string (STRING) types to accommodate alphanumeric values.
  Incorrect Configuration: If you are trying to create or modify a table, structure, or data element, and the key field is not set up correctly, this error can occur.
  Input Data Issues: If you are trying to input data into a key field that is not alphanumeric (e.g., numeric only), this error will be triggered.
  
  Solution:
  
  
  Check Field Definitions: Review the definitions of the key fields in the relevant table or structure. Ensure that they are defined as CHAR or STRING types.
  
  You can do this by navigating to the Data Dictionary (SE11) and checking the table or structure in question.
  
  
  
  Modify Data Types: If you have the necessary authorizations, you may need to modify the data type of the key field to be alphanumeric. This can be done in the Data Dictionary.
  
  Be cautious with this approach, as changing data types can have implications on existing data and application logic.
  
  
  
  Input Validation: Ensure that any data being entered into the key fields is alphanumeric. If you are using a program or transaction to input data, validate the input before submission.
  
  
  Consult Documentation: If you are working with a specific module or custom development, refer to the relevant SAP documentation or consult with your SAP Basis or ABAP team for guidance on the correct configuration.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for EEWMGBC228 in the SAP Support Portal.
  Transaction Codes: Familiarize yourself with transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), and SE37 (Function Module) for debugging and analyzing the issue.
  Testing: After making changes, conduct thorough testing to ensure that the changes do not affect other functionalities or data integrity.
  
  If the issue persists after following these steps, it may be beneficial to engage with SAP support or your internal SAP team for further assistance.