How To Fix DT247 - Field & cannot be used as key field because no default exists for type &

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 247

• Message text: Field & cannot be used as key field because no default exists for type &

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 DT247 - Field & cannot be used as key field because no default exists for type & ?

  The SAP error message DT247 indicates that a field cannot be used as a key field because there is no default value defined for the specified data type. This typically occurs when you are trying to define a key field in a database table or a structure, and the system requires a default value for that field's data type.
  Cause:
  
  Missing Default Value: The field you are trying to use as a key does not have a default value assigned in the data dictionary.
  Data Type Issues: The data type of the field may not support being a key field without a default value.
  Field Configuration: The field may not be properly configured in the data dictionary (e.g., it might be a reference field or a field that requires a specific configuration).
  
  Solution:
  
  
  Define a Default Value:
  
  Go to the Data Dictionary (transaction SE11).
  Find the table or structure where the field is defined.
  Open the field definition and check if a default value is set.
  If not, set a default value that is appropriate for the field's data type.
  
  
  
  Check Data Type Compatibility:
  
  Ensure that the data type of the field is appropriate for being a key field. Some data types may not be suitable for key fields without a default.
  
  
  
  Review Field Properties:
  
  Check the properties of the field in the data dictionary. Ensure that it is marked as a key field if that is your intention.
  Make sure that the field is not defined as a reference field or has any other restrictions that would prevent it from being a key field.
  
  
  
  Recreate the Field:
  
  If the field is incorrectly configured and cannot be fixed, consider deleting and recreating the field with the correct settings.
  
  
  
  Transport Requests:
  
  If you are working in a development environment, ensure that any changes you make are included in a transport request to move them to the quality or production environment.
  
  
  
  Related Information:
  
  Data Dictionary (SE11): This is where you can manage tables, views, data elements, domains, and other data dictionary objects.
  Field Types: Familiarize yourself with the different data types in SAP and their properties, especially regarding key fields.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to this error message.
  
  If you continue to experience issues after following these steps, consider reaching out to your SAP Basis or ABAP team for further assistance, as they may have additional insights or access to system logs that can help diagnose the problem.