How To Fix NRSCNV350 - Removing key field &1 would result in duplicate keys

SAP Error Message - Details

• Message type: E = Error

• Message class: NRSCNV - Message class

• Message number: 350

• Message text: Removing key field &1 would result in duplicate keys

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 NRSCNV350 - Removing key field &1 would result in duplicate keys ?

  The SAP error message NRSCNV350 indicates that there is an issue with removing a key field from a data structure, which would lead to duplicate keys in the database. This typically occurs during data migration or when modifying the structure of a database table or data model.
  Cause:
  
  Duplicate Key Violation: The key field you are trying to remove is essential for maintaining the uniqueness of records in the database. Removing it would result in multiple records having the same values for the remaining key fields, leading to a violation of the uniqueness constraint.
  Data Model Changes: If you are altering the data model (e.g., during a migration or upgrade), the system may detect that the remaining fields do not provide a unique identifier for the records.
  Incorrect Configuration: The configuration or mapping of the data may not be set up correctly, leading to potential duplicates when a key field is removed.
  
  Solution:
  
  Review Key Fields: Check the current key fields of the table or data structure. Ensure that the remaining fields after the removal of the key field can still uniquely identify each record.
  Add Additional Key Fields: If necessary, consider adding other fields to the key to maintain uniqueness after the removal of the specified key field.
  Data Cleansing: Before making structural changes, ensure that the data is cleansed and that there are no existing duplicates in the records that would cause issues after the key field is removed.
  Consult Documentation: Review SAP documentation or notes related to the specific transaction or data model you are working with to understand the implications of removing key fields.
  Testing: Perform thorough testing in a development or test environment before applying changes to production to ensure that the changes do not lead to data integrity issues.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on handling key fields in your version of SAP.
  Data Migration Tools: If you are using data migration tools (like SAP Data Services or LSMW), ensure that the mappings and transformations are correctly set up to avoid key conflicts.
  Database Constraints: Understand the database constraints and how they relate to the key fields in your data model. This can help in planning changes without causing integrity issues.
  
  If the problem persists after following these steps, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific scenario.