Message type: E = Error
Message class:  65 - Securities class data 
Message number: 155
Message text: Flow category 'Nominal interest' not possible for unit-quoted bonds
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The SAP error message 65155, which states "Flow category 'Nominal interest' not possible for unit-quoted bonds," typically occurs in the context of financial transactions involving bonds in the SAP system. This error is related to the configuration of financial instruments, particularly bonds that are quoted in units rather than in nominal values.
Cause: Unit-Quoted Bonds: The error arises because the system is trying to process a nominal interest flow for a bond that is quoted in units. In SAP, nominal interest flows are generally applicable to bonds that are quoted in nominal values (e.g., face value).
Configuration Issues: There may be a configuration issue in the financial instrument settings or in the way the bond is defined in the system. The system may not be set up to handle nominal interest for unit-quoted bonds. Incorrect Transaction Type: The transaction being processed may not be appropriate for the type of bond being used, leading to
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