ORA-19279
        XPTY0004 - XQuery dynamic type mismatch: expected singleton sequence - received multi-item sequence
        
        
        Cause
        The XQuery sequence passed in has more than one item.
        Action
        Correct the XQuery expression to return a single item sequence.
        
     
    
    
        ORA-19279
        XPTY0004 - XQuery dynamic type mismatch: expected singleton sequence - got multi-item sequence
        
        
        Cause
        The XQuery sequence passed in had more than one item.
        Action
        Correct the XQuery expression to return a single item sequence.
        
     
    
    
        ORA-19279
        XPTY0004 - XQuery dynamic type mismatch: expected singleton sequence - got multi-item sequence
        
        
        Cause
        The XQuery sequence passed in had more than one item.
        Action
        Correct the XQuery expression to return a single item sequence.