One PO multipe Invoices, One PO multipe Invoices

Hi

can I create for one Po , twee different invoices ?

eg I have an Po of 100 for an item .. I receive that item .. then the supplier needs to sent me some documentation (that documentation can or cannot be put on the PO eg wiht price of 0)

I receive my good  of 100 fully .. then the supplier sents me an invoice of 90 as he still needs to sent me the documentation

and when he sends me the documentation the supplier then sends an additional invoice for 10.

How can I achieve this?

thanks

els