How To Fix NGC_API_BASE021 - Class type &: Classification & already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: NGC_API_BASE - NGC API Messages

• Message number: 021

• Message text: Class type &: Classification & 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.

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message NGC_API_BASE021 - Class type &: Classification & already exists ?

  The SAP error message NGC_API_BASE021 indicates that there is an attempt to create a classification that already exists in the system. This error typically occurs when you are trying to create a new classification object (like a class or characteristic) with a name or identifier that is already in use.
  Cause:
  
  Duplicate Entry: The most common cause is that the classification you are trying to create already exists in the system. This could be due to a previous creation attempt that was not properly cleaned up or a misunderstanding of the existing classifications.
  Incorrect Input: Sometimes, the error can arise from incorrect input data or parameters that lead to the system interpreting the request as a duplicate.
  
  Solution:
  
  
  Check Existing Classifications: Before creating a new classification, check the existing classifications in the system to ensure that the one you are trying to create does not already exist. You can do this by navigating to the classification management area in SAP.
  
  
  Use a Unique Identifier: If you need to create a new classification, ensure that you are using a unique name or identifier that does not conflict with existing entries.
  
  
  Modify Existing Classification: If the classification already exists and you need to make changes, consider modifying the existing classification instead of creating a new one.
  
  
  Error Handling in Code: If this error is occurring in a custom program or interface, implement error handling to check for existing classifications before attempting to create a new one.
  
  
  Consult Documentation: Review SAP documentation or help resources for specific guidelines on classification management to ensure compliance with best practices.
  
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like CL02 (Change Class) or CL03 (Display Class) to manage classifications.
  SAP Notes: Check SAP Notes for any known issues or patches related to classification management that might address this error.
  Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP support for assistance.
  
  By following these steps, you should be able to resolve the error and successfully manage classifications in your SAP system.