How To Fix GD408 - Sender fields must be unique in their first 8 characters: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: GD - EDT: External data transfer

• Message number: 408

• Message text: Sender fields must be unique in their first 8 characters: &1

What causes this issue?

Generation of a preliminary program is terminated because the name of
the sender field is not unique in its first 8 characters. This name is
to be displayed as a parameter. However, parameters in reports may not
be longer than 8 characters.

System Response

The name is cut short.

How to fix this error?

Rename the sender field so that it is unique in its first 8 characters.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GD408 - Sender fields must be unique in their first 8 characters: &1 ?

  The SAP error message GD408 indicates that there is a problem with the uniqueness of sender fields in a particular context, typically related to the configuration of a document or transaction. The error message states that the sender fields must be unique in their first 8 characters, which means that there are multiple entries that share the same first 8 characters in a field that is expected to be unique.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that there are duplicate entries in the relevant database table or configuration that share the same first 8 characters in the sender field.
  Incorrect Configuration: There may be an issue with the configuration of the sender fields in the relevant module (e.g., in a financial document, cost center, etc.).
  Data Migration Issues: If data has been migrated from another system, it is possible that duplicates were introduced during the migration process.
  
  Solution:
  
  
  Identify Duplicates: 
  
  Use transaction codes like SE16 or SE11 to check the relevant database table for duplicates. Look for entries that have the same first 8 characters in the sender field.
  You can also use SQL queries to find duplicates if you have access to the database.
  
  
  
  Correct the Data:
  
  Once duplicates are identified, you will need to either delete or modify the duplicate entries to ensure that the first 8 characters are unique.
  If the duplicates are valid entries, consider renaming or restructuring them to maintain uniqueness.
  
  
  
  Review Configuration:
  
  Check the configuration settings related to the sender fields in the relevant module. Ensure that the settings are correct and that they enforce uniqueness as required.
  
  
  
  Test Changes: 
  
  After making the necessary changes, test the transaction or document creation again to ensure that the error is resolved.
  
  
  
  Consult Documentation: 
  
  If you are unsure about the specific sender fields or the context in which the error occurs, refer to SAP documentation or consult with your SAP support team for guidance.
  
  
  
  Related Information:
  
  Transaction Codes: SE16 (Data Browser), SE11 (Data Dictionary), and SE78 (SAP ArchiveLink) can be useful for checking data and configurations.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Forums: SAP Community and other user forums can provide insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the GD408 error and ensure that the sender fields are unique as required by the system.