How To Fix NJIT_O_MSG143 - Reference type &1 already exists for &2 &3; enter a new type

SAP Error Message - Details

• Message type: E = Error

• Message class: NJIT_O_MSG -

• Message number: 143

• Message text: Reference type &1 already exists for &2 &3; enter a new 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 NJIT_O_MSG143 - Reference type &1 already exists for &2 &3; enter a new type ?

  The SAP error message NJIT_O_MSG143 indicates that there is an attempt to create a reference type that already exists in the system. This error typically occurs in the context of creating or managing reference types in SAP, such as when working with data models, configuration settings, or other related objects.
  Cause:
  The error is triggered when:
  
  You are trying to create a new reference type (e.g., a new data type, structure, or object) that has the same name as an existing reference type in the system.
  The system enforces uniqueness for reference types, and thus it does not allow duplicates.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Reference Types:
  
  Use transaction codes like SE11 (Data Dictionary) or SE80 (Object Navigator) to search for the existing reference type using the name you are trying to create.
  Verify if the reference type already exists and if it is indeed the one you intended to create.
  
  
  
  Choose a Different Name:
  
  If the reference type already exists and you need to create a new one, consider using a different name that does not conflict with existing types.
  Ensure that the new name follows the naming conventions and is meaningful for your application.
  
  
  
  Modify Existing Reference Type:
  
  If the existing reference type is not being used or can be modified, consider updating it instead of creating a new one.
  This may involve changing its attributes or structure to meet your requirements.
  
  
  
  Consult Documentation:
  
  Review any relevant documentation or guidelines provided by your organization regarding naming conventions and reference type management.
  
  
  
  Check for Transport Issues:
  
  If you are working in a transport environment, ensure that there are no transport issues that might be causing conflicts with existing reference types.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE80 (Object Navigator), and SE37 (Function Module) for managing reference types.
  Naming Conventions: Follow your organization’s naming conventions to avoid conflicts in the future.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to this error message.
  Documentation: Refer to SAP Help documentation for more details on managing reference types and data dictionary objects.
  
  By following these steps, you should be able to resolve the NJIT_O_MSG143 error and successfully manage your reference types in SAP.