Exchange of the OPENCART site with KEYCRM

We have already created the website, but now we need integration with keycrm. (https://help.keycrm.app/ru/orders-from-your-sites/kak-pieriedavat-ostatki-tovarov-iz-key-crm-na-opencart) Maybe we will also assign improvements on the site to a specialist if we see the expected result and the collaboration is pleasant.

Regarding the task: 

1. BLOCK OF TRANSFER FROM THE SITE.

From CRM to the site, products with options, categories, descriptions, prices, stock, and main product photos. There is a module from keycrm that transfers orders with delivery type, branch address, payment type, and fact for processing in keycrm (the module is already installed, but it also needs to be improved because it does not transfer the option article, although it is present - it just needs to work together). 

Products have options, and options have articles on the site. In keycrm, this is a key field - if there is an option, the connection goes through it; if not, then through the product's scu. 

There are also product variants to be displayed together; this is for the product - the model field, or the product code if you go into it.

As you can see, they are the same for many, but the scu is already a unique concept.

The installed module "keycrm" on our site transfers to keycrm only the product code = model and option description, without the option code. And we need to transfer the scu code if there is only a product, and there is no option inside it; if there is an option, then transfer the option article. 

2. Block of transfer to the site:

It is necessary to transfer the created or updated product from keycrm through their API: scu code, model, category binding (with the category tree), main photo, additional photos if available, product description, option article, option name, option description, product price, and price deviation by option, as well as stock for them (products and options).

So we work like this:

all arrivals and creation of new nomenclature in CRM, then it is transferred to the site, where additional categories, promotions, etc. are added as needed. Orders from the Client are transferred back using the existing module (but already with the correct binding of options in keycrm, there is also a delivery method and payment and their fact) - it comes to CRM and moves the stocks.