Message type: E = Error
Message class:  CNV_20000 - Messages for fiscal year change 
Message number: 165
Message text: Verification of Invoices for Materials (RMRP)
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20000165, which pertains to the verification of invoices for materials (RMRP), typically arises during the migration or conversion process in SAP systems, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there are issues with the invoice data that need to be addressed before the migration can proceed.
Cause: The error can be caused by several factors, including: Data Inconsistencies: There may be inconsistencies in the invoice data, such as mismatched amounts, incorrect material numbers, or missing mandatory fields. Reference Issues: The invoice may reference materials or accounts that do not exist or are not properly configured in the target system.
Configuration Issues: The configuration settings for the materials management (MM) module may not align with the data being migrated. Document Type Issues: The document types used in the invoices may not be valid or recognized in the target system.
Solution: To resolve the CNV_20000165 error, you can
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