Message type: E = Error
Message class:  CNV_20200_CHECK - Messages for check functions (company code merge) 
Message number: 313
Message text: Merge of house bank account ID's in tables PAYR and PCEC
Merge of house bank account ID's.
This may cause duplicate table keys in tables PAYR or PCEC.
Error
The business processes must be analyzed for these conflicts.
In order to avoid duplicate table keys in tables PAYR and PCEC and to
avoid a loss of information regarding their associated checks and lots
these house bank account ID's must be renamed.
Provide a suitable mapping.
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_20200_CHECK313 typically occurs during the data migration process, particularly when merging house bank account IDs in the context of financial data. This error is part of the SAP Conversion and Migration tools, often encountered during the SAP S/4HANA migration or data transfer processes.
Cause: The error message indicates that there is an inconsistency or conflict in the house bank account IDs between the tables PAYR (Payment Transactions) and PCEC (Payment Clearing). This can happen due to: Duplicate Entries: There may be duplicate house bank account IDs in the source data that are being merged. Inconsistent Data: The data in the two tables may not align correctly, leading to issues when trying to merge them. Missing Mapping: If there is no proper mapping defined for the house bank accounts during the migration, it can lead to this error.
Solution: To resolve the CNV_20200_CHECK313 error, you can follow these steps: Check for Duplicates: Review the entries
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