Miro no refernce to PO

Dear Expert

in SAP 4.5 it was possible to post in Invoice Verification (MR01 or MRHR) without any link to the PO number but just selecting the vendor code, and we was able to select a New Item like GL account or Material in order to post the invoice.

In Miro, in the PO Reference TAB, there is, as Reference Document Category, Vendor but if we input the code vendor, the system search all the documents (Po) for this vendor, so refernce to the PO.

There is a way to post in Miro without refernce to the PO, but just selecting the GL account and the Material TABS?

My explanation is not so clear, sorry, I hope someone can help me!

Regards

marco