How To Fix GB406 - Value & for the field & not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: GB - Messages used by the Boolean code generator

• Message number: 406

• Message text: Value & for the field & not allowed

What causes this issue?

You entered an invalid value. The value &V1& could neither be
found in the check table for the selected table fields
nor in the value table for the domain in the selected table field
nor is the value stored as a valid fixed value for the domain.

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

System Response

Your entry in this field was not accepted.

How to fix this error?

Enter a value that the system will accept. You can enter all values that
are defined in one of the above described contexts.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GB406 - Value & for the field & not allowed ?

  The SAP error message GB406 ("Value & for the field & not allowed") typically indicates that a value entered in a specific field does not meet the validation criteria set for that field. This can occur in various contexts, such as during data entry in transactions, configuration settings, or when processing documents.
  Causes:
  
  Invalid Value: The value entered does not conform to the expected format or range defined for that field.
  Field Restrictions: The field may have specific restrictions based on business rules or configuration settings (e.g., certain values may be disallowed).
  Data Type Mismatch: The value may not match the expected data type (e.g., entering text in a numeric field).
  Custom Validation: Custom validations or enhancements may be in place that restrict certain values based on business logic.
  
  Solutions:
  
  Check Field Requirements: Review the field's documentation or help text to understand the valid values or formats.
  Correct the Value: Modify the value you are trying to enter to ensure it complies with the allowed values for that field.
  Consult Configuration: If you have access, check the configuration settings for the field in transaction codes like SPRO to see if there are any specific restrictions.
  Review Custom Code: If there are custom validations or enhancements, consult with your ABAP developer or technical team to understand the logic and adjust the input accordingly.
  Testing: If you are in a development or testing environment, try entering different values to identify which ones are accepted.
  
  Related Information:
  
  Transaction Codes: Depending on where the error occurs, you may need to look into specific transaction codes related to the module you are working with (e.g., MM for materials management, SD for sales and distribution).
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message.
  User Documentation: Refer to user manuals or training materials for guidance on valid entries for specific fields.
  Support: If the issue persists, consider reaching out to your SAP support team or consulting SAP Community forums for assistance.
  
  By following these steps, you should be able to identify the cause of the GB406 error and take appropriate action to resolve it.