How To Fix AQ191 - An additional field with this name already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: AQ - Message texts for SAP Query

• Message number: 191

• Message text: An additional field with this name already exists

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message AQ191 - An additional field with this name already exists ?

  The SAP error message AQ191, which states "An additional field with this name already exists," typically occurs when you are trying to create or modify a field in a data structure (like a table or a structure) that already has a field with the same name. This can happen in various contexts, such as when working with ABAP Dictionary objects, data elements, or structures.
  Cause:
  
  Duplicate Field Name: The most common cause is that you are attempting to add a field to a table or structure that already has a field with the same name.
  Namespace Conflicts: If you are working in a development environment with multiple developers, it's possible that another developer has already created a field with the same name.
  Transport Issues: If you are transporting objects between systems, there may be conflicts if the same field name exists in both the source and target systems.
  
  Solution:
  
  
  Check Existing Fields: 
  
  Go to the ABAP Dictionary (transaction SE11) and check the table or structure you are trying to modify. Look for existing fields with the same name.
  
  
  
  Rename the Field: 
  
  If you find a duplicate field, consider renaming the new field to something unique that does not conflict with existing names.
  
  
  
  Use Unique Naming Conventions: 
  
  Implement a naming convention that reduces the likelihood of duplicate names, especially in shared development environments.
  
  
  
  Review Transport Requests: 
  
  If the issue arises during a transport, review the transport requests to ensure that there are no conflicts with existing objects in the target system.
  
  
  
  Check for Data Elements: 
  
  If you are creating a new data element, ensure that there is no existing data element with the same name.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SE11 (ABAP Dictionary)
  SE80 (Object Navigator)
  
  
  
  Documentation: 
  
  SAP Help Portal and SAP Notes can provide additional insights and troubleshooting steps for specific scenarios related to this error.
  
  
  
  Community Forums: 
  
  SAP Community and other forums can be useful for finding similar issues faced by other developers and their solutions.
  
  
  
  By following these steps, you should be able to resolve the AQ191 error and successfully create or modify the field as needed.