How To Fix SMT_CONFIG021 - Mapping &1 already exists

SMT_CONFIG021 - Overview

• Message type: E = Error

• Message class: SMT_CONFIG - Configuration message class

• Message number: 021

• Message text: Mapping &1 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 SMT_CONFIG021 - Mapping &1 already exists ?

  The SAP error message SMT_CONFIG021 indicates that there is an attempt to create a mapping in the SAP system that already exists. This error typically occurs in the context of SAP Landscape Transformation (SLT) or SAP Data Services when you are trying to configure data replication or transformation mappings.
  
  Cause:
  The error is caused by the following scenarios:
  
  Duplicate Mapping: You are trying to create a mapping with the same name or identifier that already exists in the system.
  
  Configuration Issues: There may be a misconfiguration in the system where the mapping is not being recognized correctly.
  System State: The system might be in a state where it has not properly updated or recognized changes made to mappings.
  
  
  Solution:
  To resolve the SMT_CONFIG021 error, you can take the following steps:
  
  
  Check Existing Mappings:
  
  Go to the relevant transaction or configuration area where mappings are defined (e.g., SLT configuration).
  Look for the mapping that you are trying to create and verify