How To Fix GF100 - Values can be entered for alphanumeric fields only

SAP Error Message - Details

• Message type: E = Error

• Message class: GF - Global fields message

• Message number: 100

• Message text: Values can be entered for alphanumeric fields only

What causes this issue?

A value can be set for alphanumeric fields only (type C, N, and string)
since for other types of field the internal and external representation
of a value are not the same (user-specific formatting of type P and date
fields, for example).

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GF100 - Values can be entered for alphanumeric fields only ?

  The SAP error message GF100 ("Values can be entered for alphanumeric fields only") typically occurs when a user attempts to enter a value into a field that is not compatible with the expected data type. This error is common in various SAP transactions and can arise in different contexts, such as during data entry in forms, reports, or when processing transactions.
  Cause:
  
  Data Type Mismatch: The field you are trying to enter data into is defined as an alphanumeric field, but the value you are entering is either numeric or contains special characters that are not allowed.
  Field Length Exceeded: The value being entered may exceed the maximum length defined for that field.
  Incorrect Field Format: The format of the data being entered does not match the expected format for that field (e.g., entering a number in a text field).
  Configuration Issues: There may be issues with the configuration of the field in the underlying data model or table.
  
  Solution:
  
  Check Data Type: Ensure that the value you are entering is alphanumeric. If the field expects letters and numbers, make sure you are not entering purely numeric values or special characters.
  Verify Field Length: Check the maximum length of the field and ensure that the value you are entering does not exceed this limit.
  Correct Format: Make sure that the format of the data you are entering matches the expected format for the field. For example, if the field expects a specific pattern (like a date), ensure you are entering it in the correct format.
  Review Field Configuration: If you have access, check the configuration of the field in the relevant data model or table to ensure it is set up correctly.
  Consult Documentation: Refer to SAP documentation or help resources for the specific transaction or module you are working with to understand the expected input for the field.
  Contact Support: If the issue persists and you cannot identify the cause, consider reaching out to your SAP support team or consulting with a technical expert.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message GF100.
  Transaction Codes: The error can occur in various transaction codes, so knowing the specific transaction you are working with can help in troubleshooting.
  User Permissions: Ensure that you have the necessary permissions to enter data in the fields you are working with, as restrictions may also lead to errors.
  Field Help: Use the field help (F1) in SAP to get more information about the specific field and its requirements.
  
  By following these steps, you should be able to resolve the GF100 error and successfully enter the required values in the SAP system.