How To Fix CNV_IUUC_DB_CONN021 - Creation of BW DataSource &1(&2) failed.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_DB_CONN - db connection

• Message number: 021

• Message text: Creation of BW DataSource &1(&2) failed.

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 CNV_IUUC_DB_CONN021 - Creation of BW DataSource &1(&2) failed. ?

  The SAP error message CNV_IUUC_DB_CONN021 indicates that there was a failure in the creation of a BW DataSource. This error typically arises during the process of data migration or when setting up a connection between the source system and the BW (Business Warehouse) system.
  Causes:
  
  Connection Issues: There may be issues with the database connection settings, such as incorrect credentials, network issues, or the database server being down.
  Authorization Problems: The user executing the operation may not have the necessary authorizations to create a DataSource in BW.
  Configuration Errors: There could be misconfigurations in the BW system or the source system that prevent the DataSource from being created.
  Data Model Issues: The underlying data model may have inconsistencies or errors that prevent the DataSource from being created.
  Technical Settings: Missing or incorrect technical settings for the DataSource in the BW system.
  
  Solutions:
  
  Check Connection Settings: Verify the database connection settings in the BW system. Ensure that the connection parameters (host, port, user, password) are correct and that the database is accessible.
  Review Authorizations: Ensure that the user has the necessary authorizations to create DataSources in the BW system. This may involve checking roles and permissions.
  Examine Configuration: Review the configuration settings in both the source and BW systems. Ensure that all required settings are correctly configured.
  Validate Data Model: Check the underlying data model for any inconsistencies or errors. This may involve reviewing the structure of the tables and fields being used.
  Check Technical Settings: Ensure that the technical settings for the DataSource are correctly defined. This includes checking the extraction method and any other relevant parameters.
  Review Logs: Check the application logs (transaction SLG1) for more detailed error messages that can provide additional context on the failure.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like RSA1 (Data Warehousing Workbench) to manage DataSources and check their status.
  SAP Notes: Look for relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Refer to SAP documentation for BW DataSource creation and troubleshooting to understand the requirements and common pitfalls.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance, providing them with detailed logs and error messages for a more in-depth analysis.