How To Fix RSTRAN_DB021 - Time conversion between &1 and &2 is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: RSTRAN_DB - message for RSTRAN_DB

• Message number: 021

• Message text: Time conversion between &1 and &2 is not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSTRAN_DB021 - Time conversion between &1 and &2 is not supported ?

  The SAP error message RSTRAN_DB021, which states "Time conversion between &1 and &2 is not supported," typically occurs during data extraction or transformation processes in SAP BW (Business Warehouse) or when dealing with time-related data types in ABAP programs. This error indicates that there is an issue with converting time formats between two different data types or structures that are not compatible.
  Cause:
  
  Incompatible Data Types: The error usually arises when there is an attempt to convert between incompatible time formats, such as trying to convert a timestamp to a date or between different time zones.
  Incorrect Data Mapping: If the data mapping in the transformation or data flow is not set up correctly, it can lead to this error.
  Data Source Issues: The source data may contain unexpected formats or values that cannot be converted to the target format.
  Time Zone Differences: If the source and target systems are in different time zones and the conversion is not handled properly, this error may occur.
  
  Solution:
  
  Check Data Types: Ensure that the data types being used in the transformation are compatible. For example, if you are converting a timestamp, make sure both the source and target fields are of compatible types.
  Review Transformation Logic: Go through the transformation rules in the Data Transfer Process (DTP) or the InfoPackage to ensure that the mappings are correct and that there are no mismatches in the expected formats.
  Data Cleansing: If the source data contains invalid or unexpected values, consider cleansing the data before the transformation process. This may involve filtering out or correcting problematic records.
  Time Zone Handling: If time zones are involved, ensure that the conversion logic accounts for the differences. You may need to explicitly handle time zone conversions in your ABAP code or transformation logic.
  Debugging: If you have access to the ABAP code or the transformation process, use debugging tools to trace where the error occurs and inspect the values being processed at that point.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review the SAP BW documentation for information on data types, transformations, and best practices for handling time-related data.
  Community Forums: Engage with the SAP community forums or SAP support for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the RSTRAN_DB021 error and implement a suitable solution.