Message type: E = Error
Message class:  64 - Treasury Management: Securities 
Message number: 780
Message text: Flow type not permitted
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The SAP error message "64780 Flow type not permitted" typically occurs in the context of financial transactions, particularly when dealing with cash flow management or financial accounting. This error indicates that the flow type being used in a transaction is not allowed for the specific operation or context in which it is being applied.
Cause: Invalid Flow Type: The flow type specified in the transaction does not exist or is not configured correctly in the system.
Configuration Issues: The flow type may not be permitted for the specific transaction type or document type being processed. Authorization Issues: The user may not have the necessary permissions to use the specified flow type. Transaction Context: The flow type may not be applicable in the current context, such as during a specific period or for a specific account.
Solution: Check Flow Type Configuration: Go to the configuration settings in SAP (transaction code SPRO) and navigate to the relevant area for cash
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