How To Fix CNV_21538020 - Date type &1 not defined in T548Y

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_21538 - Date Type Rename

• Message number: 020

• Message text: Date type &1 not defined in T548Y

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_21538020 - Date type &1 not defined in T548Y ?

  The SAP error message CNV_21538020, which states "Date type &1 not defined in T548Y," typically occurs during the conversion or migration of data, particularly when dealing with date types in the SAP system. The error indicates that a specific date type (represented by &1) is not defined in the T548Y table, which is used to store date type definitions.
  Cause:
  
  Missing Date Type Definition: The date type that is being referenced in the process is not defined in the T548Y table. This could happen if the date type was never created or if it was deleted or modified incorrectly.
  Configuration Issues: There may be issues with the configuration settings in the SAP system that prevent the date type from being recognized.
  Data Migration Issues: If you are migrating data from another system, the date type may not have been included in the migration process.
  
  Solution:
  
  
  Check T548Y Table: 
  
  Use transaction code SE11 (Data Dictionary) to view the T548Y table.
  Check if the date type in question is present. If it is missing, you will need to create it.
  
  
  
  Define the Missing Date Type:
  
  If the date type is not defined, you can add it manually. You will need to know the specifics of the date type you want to define (e.g., its characteristics).
  Use transaction code SPRO to navigate to the configuration settings related to date types and ensure that the necessary date types are defined.
  
  
  
  Review Custom Code: 
  
  If there is custom code or enhancements that reference the date type, ensure that they are correctly implemented and that they reference valid date types.
  
  
  
  Consult Documentation: 
  
  Review any relevant documentation or notes from SAP regarding the specific date type and its usage.
  
  
  
  Check for Transport Issues: 
  
  If this issue arose after a transport, ensure that all necessary objects were transported correctly, including any related configuration.
  
  
  
  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:
  
  T548Y Table: This table is part of the SAP configuration for date types and is crucial for various date-related functionalities in the system.
  Transaction Codes: Familiarize yourself with transaction codes like SE11 (Data Dictionary), SPRO (Customizing), and SE80 (Object Navigator) for troubleshooting.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.