Hi,
Shopify gives a customer ID like 6442353426686 but we need to have 6 digits starting with 200001 and goes up, is this possible? Don’t need to replace shopify logic, this more an add-on field.
I created a metafiled with same name in both customers and orders but I have no idea how this can be generated, because I need customers and orders be linked on a custom csv export.
Thank you.
Not possible within Shopify. That number is assigned by Shopify because Shopify needs it to differentiate it from other accounts. If you could customize it then there’s a chance you could make it the same as someone else’s and that would be a bad day for both of those customers 
If you’re doing a CSV export anyway then there might be something you can do inside of your spreadsheeting program to append those digits to the customer ID field. That’s more than I know how to do with spreadsheets but those programs are more powerful than they seem. Just have to find someone who knows how to make them sing.
This is just a backend solution, we don’t need to show to customer.
It’s like internal thing. My issue is that, I download the 2 xls and assign a manual number, how can I assign the orders with that same users ID? got it? And then if we download again, everything will be lost…
Managed doing it with Arigato Automation app