Message type: E = Error
Message class:  FR - Messages for FI Reporting 
Message number: 081
Message text: Entry already exists in PNBK
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
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The SAP error message FR081, which states "Entry already exists in PNBK," typically occurs in the context of financial accounting or bank accounting within the SAP system. This error indicates that there is an attempt to create or modify a bank master record or bank account entry that already exists in the system.
Cause: Duplicate Entry: The most common cause of this error is that the bank account or bank master record you are trying to create or modify already exists in the system. Incorrect Data Entry: There may be a mistake in the data being entered, such as incorrect bank account numbers or bank keys. Data Migration Issues: If data has been migrated from another system, there may be duplicates that were not properly handled during the migration process.
Solution: Check Existing Records: Before creating a new bank account or master record, check the existing records in the system to ensure that the entry does
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