How To Fix APS_CKE_PARSER019 - Choose a unique field alias. &1 is already used .

SAP Error Message - Details

• Message type: E = Error

• Message class: APS_CKE_PARSER - CDS Key user tool - AST handler messages

• Message number: 019

• Message text: Choose a unique field alias. &1 is already used .

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message APS_CKE_PARSER019 - Choose a unique field alias. &1 is already used . ?

  The SAP error message APS_CKE_PARSER019, which states "Choose a unique field alias. &1 is already used," typically occurs in the context of SAP BusinessObjects or SAP BW when you are working with queries, reports, or data models. This error indicates that there is a conflict with field aliases in your data model or query definition, where the same alias has been assigned to multiple fields.
  Cause:
  
  Duplicate Field Aliases: The most common cause of this error is that you have assigned the same alias to more than one field in your query or data model.
  Field Renaming: If you have renamed fields or copied fields, it is possible that the new names are conflicting with existing aliases.
  Data Source Changes: Changes in the underlying data source or structure may lead to alias conflicts if the same alias is generated for different fields.
  
  Solution:
  
  
  Check Field Aliases: Review the field aliases in your query or data model. Ensure that each field has a unique alias. You can do this by:
  
  Opening the query or data model in the design view.
  Inspecting the properties of each field to identify any duplicates.
  
  
  
  Rename Duplicates: If you find duplicate aliases, rename them to ensure uniqueness. This can usually be done by right-clicking on the field and selecting the option to rename or edit the alias.
  
  
  Review Data Model: If you are working with a complex data model, ensure that the same alias is not being used across different layers or components of the model.
  
  
  Test Changes: After making changes, run the query or report again to verify that the error has been resolved.
  
  
  Related Information:
  
  Documentation: Refer to SAP documentation or help resources for specific guidelines on naming conventions and best practices for field aliases.
  Community Forums: Check SAP community forums or support channels for similar issues and solutions shared by other users.
  Version Specifics: Be aware that the behavior might vary slightly depending on the version of SAP you are using, so ensure that you are looking at the correct version of the documentation.
  
  By following these steps, you should be able to resolve the APS_CKE_PARSER019 error and successfully run your query or report.