Setting up new AP BU

We are trying to setup several new AP Business Units and for one of them I am running into an issue where it is not allowing me to add the new BU to the payables options page for setup. I was able to successfully add the bu to the payables definition page however when trying to add to the payables options page as the setid i am receiving invalid value error. Our other new bu's got added successfully so we are unsure what the issue is. Has anyone else had experience with this and can shed some light on something