How To Fix CNV_PE_CHECK121 - Interface 1 &1 is unequal to the required interface 1 &2

CNV_PE_CHECK121 - Overview

• Message type: E = Error

• Message class: CNV_PE_CHECK - Check Framework messages for posting engine

• Message number: 121

• Message text: Interface 1 &1 is unequal to the required interface 1 &2

Self-Explanatory Message

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CNV_PE_CHECK121 - Details

• The SAP error message CNV_PE_CHECK121 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is a mismatch between the expected interface and the actual interface being used in the data migration process.
  
  Cause:
  The error message CNV_PE_CHECK121 is triggered when the system detects that the interface being used (Interface 1) does not match the required interface (Interface 2). This can happen due to several reasons, including:
  
  Incorrect Configuration: The migration or conversion settings may not be configured correctly, leading to the use of an incorrect interface.
  Data Mapping Issues: The data being migrated may not be mapped correctly to the expected structure or format.
  Version Mismatch: There may be a version mismatch between the source and target systems, causing incompatibility in the interfaces.
  Missing or Incorrect Data: The data being processed may be incomplete or not conforming to the