How To Fix CNV_OT_APPL_PE021 - FI_DOC_TO_ACC_TRANSFORM error for FI document &2(&3) in company code &1

CNV_OT_APPL_PE021 - Overview

• Message type: E = Error

• Message class: CNV_OT_APPL_PE - Messages for application specific functions

• Message number: 021

• Message text: FI_DOC_TO_ACC_TRANSFORM error for FI document &2(&3) in company code &1

Self-Explanatory Message

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CNV_OT_APPL_PE021 - Details

• The SAP error message CNV_OT_APPL_PE021 typically occurs during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error is related to the transformation of financial documents (FI documents) into the new system format.
  
  Cause:
  The error message CNV_OT_APPL_PE021 indicates that there is an issue with the transformation of a financial document (FI document) into the corresponding accounting entries. The specific causes can include:
  
  Data Inconsistencies: The FI document may contain data that does not conform to the expected format or rules in the target system.
  Missing Master Data: Required master data (like GL accounts, cost centers, etc.) may be missing or not properly mapped in the target system.
  
  Configuration Issues: There may be configuration settings in the target system that are not aligned with the source data.
  Document Type Issues: The document type used in the FI document may not be valid or recognized in the target