Shipping And Invoice Address Are Not The Same

Whenever i click on a customer, the shipping address is correct.
The 'Are shipping and billing addresses the same?' is set to yes.

However on all customers the Address (field b. address) shows KIB which are the first 3 letters of the stores' address.
I cannot find where that is coming from

Any thoughts?

If you mean "KIB" appears on the invoice, then I would suggest checking the invoice template first - specifically the code snippets.