How to create new alternate type for crossReference?

[kashyap]

We need more crossReference fields for inventory like IBANnumber, stockprice and other attributes.

[Magnus Johnsen]

Hi,

You crossReference to maintain cross-references between the item ID of the stock item used in your company and identifiers used by your suppliers and customers for the item.

What is it you are trying to do? Normally IBAN numbers are only set on customer/suppliers.

Attributes can be set under attributes, which you can set up as you like, you can read how to handle them here:

Using the Attribute Parameter