Suppose, there are 2 types of products on my website Product A & Product B. Here, are 3 cases -
Case 1 - When customer order Product A(any quantity) type product then from Magento we will get order number like this - 0000001
Case 2 - When customer order Product B(any quantity) type product then from Magento we will get order number like this - 0000002
Case 3 - When customers order both Product A(2 items) & Product B(3 items) in a single order, then we will get an order number like this - 0000003 - it is fine. But here we need to split order number 0000003 into 2 orders internally (maybe like this 0000003_1 & 0000003_2 or any other way), a customer must have single order number but admin have 2 orders(0000003_1 & 0000003_2) or any other way so that we can manage internally?
Case 1 and Case 2 is fine, we need to customize Case 3.