the API does not work with merchant_orders

I come with a consultation of the most basic. I am bringing the collection of market payment for the collections webhook: curl ' link $ fechaDesde & end_date = $ currentDate & access_token = $ token & offset = $ offset '

Everything very nice until I need the shipping address to invoice and charge taxes, that does not come there. Then I go to the merchant_orders url and it does not work. Is there a trick?

Thanks !!!

curl ' link ' {"message": "merchant_order not found", "error": "not_found", "status": 404, "cause": []}