How To Fix TT108 - ' is not a valid default value

SAP Error Message - Details

• Message type: E = Error

• Message class: TT - Extended Computer Aided Test Tool (eCATT) messages

• Message number: 108

• Message text: ' is not a valid default value

What causes this issue?

You attempted to enter a single quotation mark (') as a default value.

System Response

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

How to fix this error?

Enter a fixed value or a &-variable.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TT108 - ' is not a valid default value ?

  The SAP error message TT108 typically indicates that there is an issue with a default value that has been set for a particular field or parameter in a transaction or configuration. This error can occur in various contexts, such as when working with data entry screens, configuration settings, or during the execution of certain transactions.
  Cause:
  
  Invalid Default Value: The default value set for a field does not conform to the expected format or data type. For example, if a numeric field is expecting a number but receives a string or an invalid character.
  Missing Configuration: The default value may refer to a configuration or master data that does not exist or is not properly set up in the system.
  Data Type Mismatch: The default value may not match the data type defined for the field in the database or application logic.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access or set the default value.
  
  Solution:
  
  Check Default Value Configuration: Review the configuration settings for the field in question. Ensure that the default value is correctly defined and matches the expected data type.
  Validate Data: If the default value is derived from another field or table, ensure that the source data is valid and exists in the system.
  Adjust Data Types: If there is a data type mismatch, adjust the default value to ensure it matches the expected type (e.g., change a string to a number).
  Review Authorizations: Ensure that the user has the necessary permissions to access and modify the relevant fields or configurations.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance related to the transaction or module you are working with.
  
  Related Information:
  
  Transaction Codes: Depending on where the error occurs, you may need to look into specific transaction codes related to configuration or data entry.
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message TT108.
  Debugging: If you have access to debugging tools, you can trace the execution to see where the error is being triggered and gather more context about the issue.
  Community Forums: SAP Community and other forums can be helpful for finding similar issues faced by other users and potential solutions.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to your SAP support team or consult with an SAP expert for further assistance.