How To Fix RSCNV812 - Undo for the conversion is not possible.

RSCNV812 - Overview

• Message type: E = Error

• Message class: RSCNV - Messages class for Metadata Remodeling Toolbox

• Message number: 812

• Message text: Undo for the conversion is not possible.

What causes this issue?

Undo of the conversion step cannot be processed. The possible reasons
are:
1. The Shadow table doesn't exists to recover the data.
2. In case of DSO, the remodeling has failed in the Change Log step.
3. The remodeling has failed at the step where it can't be Undone.
4. The user doesn't have authorization for the object 'S_DEVELOP'.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

RSCNV812 - Details

• The SAP error message RSCNV812, which states "Undo for the conversion is not possible," typically occurs during data conversion processes, particularly when using the SAP Data Transfer Workbench or during data migration activities. This error indicates that the system is unable to reverse a conversion operation that has already been executed.
  Causes:
  
  Incomplete Data Conversion: The conversion process may not have been completed successfully, leading to inconsistencies in the data.
  Data Integrity Issues: There may be issues with the data being converted, such as invalid formats or missing required fields.
  System Configuration: Incorrect settings in the conversion program or data mapping can lead to this error.
  Locking Issues: If the data being converted is locked by another process, it may prevent the undo operation from being executed.
  Technical Limitations: Certain types of conversions may not support undo operations due to the nature of the data or the conversion logic.
  
  Solutions:
  
  Check Data Integrity: Review the data being converted