pushing in @Id triggers exception "Identifier accessor method required"

    @Id @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="prod_seq")
    @SequenceGenerator(name="prod_seq", sequenceName="PRODUCTS_SEQ")
    @Column(name = "id")
    private Integer id;

    public Integer getId() {
        return this.id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

@@ -25,19 +21,6 @@
     @PersistenceContext
     transient EntityManager Products.entityManager;
     
-    @Id
-    @GeneratedValue(strategy = GenerationType.AUTO)
-    @Column(name = "ID")
-    private BigDecimal Products.id;
-    
-    public BigDecimal Products.getId() {
-        return this.id;
-    }
-    
-    public void Products.setId(BigDecimal id) {
-        this.id = id;
-    }
-    
     @Transactional
     public void Products.persist() {
         if (this.entityManager == null) this.entityManager = entityManager();
@@ -89,7 +72,7 @@
         return entityManager().createQuery("SELECT o FROM Products o", Products.class).getResultList();
     }
     
-    public static Products Products.findProducts(BigDecimal id) {
+    public static Products Products.findProducts(Integer id) {
         if (id == null) return null;
         return entityManager().find(Products.class, id);
     }

Identifier accessor method required
java.lang.IllegalArgumentException: Identifier accessor method required
    at org.springframework.roo.support.util.Assert.notNull(Assert.java:112)
    at org.springframework.roo.addon.dod.DataOnDemandMetadata.<init>(DataOnDemandMetadata.java:75)
    at org.springframework.roo.addon.dod.DataOnDemandMetadataProvider.getMetadata(DataOnDemandMetadataProvider.java:129)
    at org.springframework.roo.classpath.itd.AbstractItdMetadataProvider.get(AbstractItdMetadataProvider.java:269)
    at org.springframework.roo.metadata.DefaultMetadataService.getInternal(DefaultMetadataService.java:148)
    at org.springframework.roo.metadata.DefaultMetadataService.get(DefaultMetadataService.java:82)
    at org.springframework.roo.classpath.itd.AbstractItdMetadataProvider.notify(AbstractItdMetadataProvider.java:146)
    at org.springframework.roo.metadata.DefaultMetadataService.notify(DefaultMetadataService.java:235)
    at org.springframework.roo.metadata.internal.DefaultMetadataDependencyRegistry.notifyDownstream(DefaultMetadataDependencyRegistry.java:214)
    at org.springframework.roo.classpath.javaparser.JavaParserMetadataProvider.onFileEvent(JavaParserMetadataProvider.java:131)
    at org.springframework.roo.file.monitor.polling.PollingFileMonitorService.publish(PollingFileMonitorService.java:330)
    at org.springframework.roo.file.monitor.polling.PollingFileMonitorService.scanNotified(PollingFileMonitorService.java:213)
    at org.springframework.roo.process.manager.internal.DefaultProcessManager.doTransactionally(DefaultProcessManager.java:189)
    at org.springframework.roo.process.manager.internal.DefaultProcessManager.execute(DefaultProcessManager.java:143)
    at org.springframework.roo.process.manager.ProcessManagerHostedExecutionStrategy.execute(ProcessManagerHostedExecutionStrategy.java:47)
    at org.springframework.roo.shell.AbstractShell.executeCommand(AbstractShell.java:181)
    at org.springframework.roo.shell.jline.JLineShell.promptLoop(JLineShell.java:358)
    at org.springframework.roo.shell.jline.JLineShell.run(JLineShell.java:132)
    at java.lang.Thread.run(Thread.java:680)