Process for using One Time Vendor

One Time Vendors 

One time vendors can only be used for specific vendor account groups. There is a flag for each account group in the configuration for this. If one does not exist you will have to create a new vendor account group.

To create a One Time Vendor use XK01 and select the OTV account group.

When creating say a PO use your OTV account the transaction will prompt you to name, address, etc. (unlike a normal vendor).

You experienced a problem with OTV's whereby users couldn't be bothered to create permanent vendors and just used the OTV account, so beware of that.