How To Fix CNV_PE_IF_RT019 - Data alias &1 is not unique parameter (ID: &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_IF_RT - PE: Interfaces Runtime generation

• Message number: 019

• Message text: Data alias &1 is not unique parameter (ID: &2)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_IF_RT019 - Data alias &1 is not unique parameter (ID: &2) ?

  The SAP error message CNV_PE_IF_RT019 indicates that there is a problem with the uniqueness of a data alias in the context of a data migration or conversion process. Specifically, the message states that the data alias specified (represented by &1) is not unique for the given parameter ID (represented by &2). This typically occurs in scenarios involving data transformation or migration, such as during the use of the SAP Data Migration Cockpit or other data conversion tools.
  Cause:
  
  
  Duplicate Data Aliases: The most common cause of this error is that there are multiple entries in the system that share the same data alias for the specified parameter ID. This can happen if the data model has not been properly defined or if there are inconsistencies in the data mapping.
  
  
  Configuration Issues: There may be issues in the configuration of the data migration or transformation process, leading to conflicts in how data aliases are defined.
  
  
  Data Model Changes: If there have been recent changes to the data model or the migration configuration, it could lead to conflicts that result in non-unique data aliases.
  
  
  Solution:
  
  
  Check Data Aliases: Review the data aliases defined in the system for the specified parameter ID. Ensure that each alias is unique and does not conflict with others. You can do this by navigating to the relevant configuration or mapping tables in the SAP system.
  
  
  Modify Configuration: If you find duplicate entries, modify the configuration to ensure that each data alias is unique. This may involve renaming aliases or adjusting the mapping to avoid conflicts.
  
  
  Review Migration Settings: If you are using a migration tool, check the settings and mappings to ensure that they are correctly defined and do not lead to duplicate aliases.
  
  
  Consult Documentation: Refer to the SAP documentation or notes related to the specific migration or conversion process you are using. There may be specific guidelines or best practices for defining data aliases.
  
  
  Testing: After making changes, perform a test run of the migration or conversion process to ensure that the error has been resolved.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on data alias management.
  Data Migration Cockpit: If you are using the SAP Data Migration Cockpit, familiarize yourself with its features and how it handles data aliases.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered and resolved similar issues.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.