org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL via JDBC Statement in SpringBoot with h2 and JPA

@shubh.. Your Entity Field names are matching with SQL reserved keywords,

So try to change the field names otherwise use name attribute with @Column Annotation (which gives alias names to the DATABASE)

    @Column(name="valueFrom") 
    private String from;

    @Column(name="valueTo") 
    private String to;

    private BigDecimal conversionMultiple;
    private int port;