Customer hex ids during batch creation

I’d like to know how to be aware of customer hex id’s as i would like to use batch create on my invoices and quotes. But i notice they require hex ids of preexisiting customers.

The UUID function as links between relational database tables. Typically each tab in Manager corresponds to an underlying relational database table.

So to find a list of all customers UUID, go to the Customer tab in Manager and do a batch update. The key for each customer is the last field in the line.

This key can then be used to specify customer in invoices and quotes

As correctly stated, the easiest way is to export customer list through Batch Update. To make the easier the creation of the invoices in Excel I suggest than to use VLOOKUP