some changes

src/main/kotlin/com/restapi/domain/models.kt

@@ -14,7 +14,7 @@ import javax.persistence.*
 
 data class Comments(val text: String = "", val by: String = "", val at: LocalDateTime = LocalDateTime.now())
 data class POProducts(
-    val productId: String = "",
+    val productId: Long = 0,
     val productName: String = "",
     val unitPrice: Double = 0.0,
     val quantity: Double = 0.0,
@@ -344,7 +344,8 @@ open class Product : BaseTenantModel() {
         this.gstPct = updatedProduct.gstPct
     }
 
-    var id: String? = null
+    @Column(name = "id")
+    var code: String? = null
     var name: String = ""
     var description: String = ""
     var hsnCode: String = ""