How To Fix 37604 - Field name & already exists. (Unable to change name)

SAP Error Message - Details

• Message type: E = Error

• Message class: 37 - Screen Painter

• Message number: 604

• Message text: Field name & already exists. (Unable to change name)

What causes this issue?

You entered a field name that is already used in the same form on the
current screen.

System Response

The system declines your entry to avoid duplicate field definitions.

How to fix this error?

Choose a name that has not yet been used in the screen. You can see
which names have already been used by looking in the element list.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 37604 - Field name & already exists. (Unable to change name) ?

  The SAP error message "37604 Field name & already exists. (Unable to change name)" typically occurs when you are trying to create or modify a field in a data structure, table, or other object, and the name you are attempting to use is already in use by another field or object within the same context. This can happen in various scenarios, such as when working with Data Dictionary objects, structures, or database tables.
  Cause:
  
  Duplicate Field Name: The most common cause is that the field name you are trying to use is already defined in the same structure, table, or context.
  Namespace Conflicts: If you are working in a development environment with multiple developers, it's possible that someone else has already created a field with the same name.
  Transport Issues: If you are transporting objects between systems, there may be conflicts with existing objects in the target system.
  
  Solution:
  
  Check Existing Fields: Verify if the field name you are trying to use already exists. You can do this by checking the Data Dictionary (SE11) or the relevant structure/table.
  Rename the Field: If the field name is already in use, consider using a different name that is unique within the context.
  Use a Naming Convention: Implement a naming convention that reduces the likelihood of conflicts, such as prefixing field names with a project or module identifier.
  Review Transport Requests: If you suspect a transport issue, check the transport requests to ensure that there are no conflicts with existing objects in the target system.
  Consult Documentation: If you are unsure about the naming conventions or existing fields, refer to the project documentation or consult with your team.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), or SE37 (Function Module) to investigate existing objects and their definitions.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to this error message.
  Development Guidelines: Follow SAP development guidelines and best practices to avoid naming conflicts and ensure consistency in your development work.
  
  By following these steps, you should be able to resolve the error and proceed with your development tasks in SAP.