There is a new feature in version 14 of SpendMap that you can use to limit the items that your staff can select while entering Purchase Orders, such that they will only be able to select the standard items that you have set up for that supplier in advance. That is, you can prohibit the use of non-standard items/suppliers.
Just use the new setting in PO Entry Settings, which you can find here…
– PURCHASING > Setup system> Purchase Order settings > PO entry settings
Alternatively, without this formal restriction, users can also search for items by supplier while entering new POs.
Finally, if you forgo the restriction and allow your staff to select non-standard items/suppliers but still want to know when it’s happening, you can use the setting “Log if non-standard supplier is chosen”, in System Alert Log Settings…
– PURCHASING > Setup system > System alert log settings