Importing stock of a item but from multiple suppliers

Hello,
We have a physical item in our warehouse sourced from two suppliers. For end customer this item looks the same regardless of the supplier but for us as a business its important to know where the item was sourced from for warranty/price/quality issues.
Question:
How do we import this stock into ERP? Stock reconciliation does not have a field for supplier in it? any suggestions? Many thanks

You can create a purchase invoice with update stock checked.

@rtdany10 thank you for your suggestion. its great idea but since we are migrating from manual world into ERP, we want to do initial stock entry and later entries will be done with proper purchase orders. Our developers have added Supplier field in the stock reconciliation table and removed duplicate item validation off so new we can do above all from one screen. by the way its was custom development that took above 3 hours.