How To Fix RSO_RES_CONVMSGS028 - Key date derivation type &1 already exists.

SAP Error Message - Details

• Message type: E = Error

• Message class: RSO_RES_CONVMSGS - Messages directly related to the conversion types

• Message number: 028

• Message text: Key date derivation type &1 already exists.

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 RSO_RES_CONVMSGS028 - Key date derivation type &1 already exists. ?

  The SAP error message RSO_RES_CONVMSGS028 indicates that there is an issue with the key date derivation type in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence). This error typically occurs when you are trying to create or modify a key date derivation type that already exists in the system.
  Cause:
  The error is caused by attempting to define a key date derivation type that has already been defined in the system. This can happen if:
  
  You are trying to create a new key date derivation type with the same identifier as an existing one.
  There is a duplicate entry in the configuration settings.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Key Date Derivation Types:
  
  Go to the relevant transaction in SAP (e.g., RSA1 for Data Warehousing Workbench).
  Navigate to the area where key date derivation types are defined.
  Look for the key date derivation type that you are trying to create and verify if it already exists.
  
  
  
  Modify or Delete Existing Entry:
  
  If the key date derivation type already exists and you need to make changes, consider modifying the existing entry instead of creating a new one.
  If the existing entry is not needed, you can delete it if it is safe to do so.
  
  
  
  Use a Unique Identifier:
  
  If you need to create a new key date derivation type, ensure that you use a unique identifier that does not conflict with existing entries.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for more information on key date derivation types and their configuration.
  
  
  
  Check for Transport Issues:
  
  If this error occurs after a transport, ensure that the transport did not bring in conflicting definitions.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance, especially if this is a production environment.
  
  
  
  Related Information:
  
  Key Date Derivation Types: These are used in SAP BW to determine the key date for data extraction and reporting.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench) and others related to BW configuration.
  SAP Notes: Check for any SAP Notes related to this error message for additional guidance or patches that may address the issue.
  
  By following these steps, you should be able to resolve the error and continue with your configuration in SAP.