I am looking for a good format for my customer ids and I notice the Telerik uses xx####### where xx are two letters and ####### are numbers. What do the letters stand for? Are the numbers sequential (incrementing) or random?

How about Telerik Order Ids where you use xxx####### with 3 letters?

Hello,

The company uses a proprietary algorithm for generating the customer and order ids. I cannot share its internals because of security concerns.

Personally, I believe most of the possible formats should good enough if they correspond to your design and security needs. 

Regards,
AsenArizanov
Telerik