How To Fix CM_EHFND_CHM120 - &1 has already been added to &2 in section &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_EHFND_CHM - Messages for Chemical Agents

• Message number: 120

• Message text: &1 has already been added to &2 in section &3

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CM_EHFND_CHM120 - &1 has already been added to &2 in section &3 ?

  The SAP error message CM_EHFND_CHM120 typically indicates that there is an attempt to add an item (like a field, entity, or component) that has already been included in a specific section of a configuration or data model. This error is common in scenarios involving configuration management, especially when working with the SAP Cloud Application Programming (CAP) model or similar frameworks.
  Cause:
  The error occurs when:
  
  You are trying to add a duplicate entry to a collection or list that does not allow duplicates.
  There is a misconfiguration in your data model or application where the same item is being referenced multiple times.
  The system is enforcing uniqueness constraints that are being violated.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check for Duplicates: Review the section mentioned in the error message (&3) to see if the item (&1) is already present in the collection (&2). If it is, you do not need to add it again.
  
  
  Modify Your Configuration: If you need to add a new item, ensure that it is not already included. If it is, consider whether you need to modify the existing entry instead of adding a new one.
  
  
  Review Code/Configuration Logic: If this error arises from a programmatic addition (like in a custom application), check the logic that adds items to ensure it checks for existing entries before attempting to add a new one.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific module or framework you are working with to understand the constraints and requirements for the configuration you are trying to implement.
  
  
  Debugging: If you are unable to identify the issue, consider using debugging tools to trace the execution flow and see where the duplicate addition is being attempted.
  
  
  Seek Help from SAP Community: If the issue persists, consider reaching out to the SAP community forums or support for additional insights or similar experiences from other users.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community for discussions related to this error, as other users may have encountered and resolved similar issues.
  Documentation: Review the official SAP documentation for the specific module you are working with to understand the constraints and best practices.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.