How To Fix AD109 - Field & in table & is specified twice. Please check.

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 109

• Message text: Field & in table & is specified twice. Please check.

What causes this issue?

Two fields in the table have the same name. Field names must be unique
within a table.

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?

Check the names of the table fields and correct them as necessary.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD109 - Field & in table & is specified twice. Please check. ?

  The SAP error message AD109 indicates that a field is specified more than once in a table definition. This typically occurs in the context of data dictionary objects, such as database tables, views, or structures, where a field name must be unique within the same context.
  Cause:
  
  Duplicate Field Definition: The most common cause of this error is that the same field name has been defined multiple times in the same table or structure.
  Copy-Paste Errors: Sometimes, during the creation or modification of a table, fields may be inadvertently copied and pasted, leading to duplicates.
  Inconsistent Data Dictionary: If there are inconsistencies in the data dictionary, such as changes made in different development environments that have not been synchronized, this error can occur.
  
  Solution:
  
  Check Field Definitions: Go to the data dictionary (transaction SE11) and check the table or structure definition. Look for the field that is mentioned in the error message and ensure that it is defined only once.
  Remove Duplicates: If you find that the field is defined multiple times, remove the duplicate entry. Ensure that the field names are unique within the same table or structure.
  Activate the Object: After making the necessary changes, activate the table or structure to ensure that the changes take effect.
  Transport Requests: If you are working in a development environment, ensure that any transport requests are properly managed to avoid inconsistencies across different environments.
  
  Related Information:
  
  Transaction Codes: 
  
  SE11: Data Dictionary (to view and edit table definitions)
  SE14: Database Utility (to check and adjust database objects)
  
  
  Documentation: Refer to SAP Help documentation for more details on data dictionary objects and best practices for defining tables and structures.
  Debugging: If the error persists after checking for duplicates, consider using transaction SE80 to analyze the object further or check for any related enhancements or modifications that might be causing the issue.
  
  By following these steps, you should be able to resolve the AD109 error and ensure that your table definitions are correct and free of duplicates.