how to create distinct Product in AX 2012

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X++

Microsoft

Dynamics-AX

hi i want to create new distinct product in AX 2012 using X++.
I'm new in this environment and I hope to give me good explanation about how to know the tables that i have to fill it to be apple to release the product later.

I just used this code to create new product, but when I can not release it. why? and how can fix it?

static void CCED_CreateNewProduct(Args _args)
{
//inisalization
InventTable inventTable;
EcoResProductTranslation ecoResProductTranslation;
EcoResProduct ecoResProduct;
EcoResProductNumberBuilder ecoResProductNumberBuilder;
InventModelGroupItem InventModelGroupItem;

//create new Product by inserting data to these 4 tables
ecoResProduct = null;
ecoResProduct = new SysDictTable(tableNum(EcoResDistinctProduct)).makeRecord();
ecoResProductNumberBuilder = EcoResProductNumberBuilder::newFromProductNumber("ABCD123");
ecoResProduct.DisplayProductNumber = ecoResProductNumberBuilder.buildDisplayProductNumber();
ecoResProduct.ProductType = EcoResProductType::Item;
ecoResProduct.productSubtype = EcoResProductSubtype::Product;
ecoResProduct.validateWrite();
ecoResProduct.insert();

}

thanks