Purchase Info (Maintain Vendors)
To set up unique purchase transaction defaults for each vendor record, select the Purchase Info tab in the Maintain Vendors window. You can change this information at the transaction level, if necessary.
Purchase Rep: You can enter or select an employee to act as the purchase rep for this vendor.
Tax ID Number: Enter the vendor's tax ID number. This is only necessary if you send this vendor a 1099 form.
Ship Via: Select the primary shipping carrier that this vendor uses for items. The shipping carriers are set up in Inventory Item Defaults.
Form Options: This group box includes options that determine how purchase order forms are delivered to your vendors, either from the Select a Report or Form window or using the Email button on the Purchase Orders window.
- Batch Delivery method: Choose either paper forms or email. Whenever you print a form in bulk from the Select a Report or Form window, your choice will determine whether the form is printed for mailing OR automatically sent as an email attachment to this specific vendor.
- Email purchase rep when using batch processing to send forms: Select this to automatically send an email copy of the form to the default purchase rep (whose ID appears in the Purchase Rep field) whenever you send a form to the vendor.
- Replace Item ID with: You can select UPC/SKU or Part Number to display as your item identification on forms.
Terms and Credit: You can choose
to use default vendor payment terms set up in Vendor
Defaults or set up a unique set of terms for this vendor. Select Customize terms for this vendor from
the drop-down list to create unique terms for this vendor. When you do
so, Sage 50 will display a list of options to customize the terms. 
See the options
Payment Settings: These settings determine the default payment method and cash account used for payments to the selected vendor. Payments can be entered on the Payments, Write Checks, and Purchases screens.
Tell me more about these settings
By default, the Use payment method and cash account from last saved payment check box is checked. This means that when you enter a payment for the selected vendor, the Payment Method and Cash Account fields default to the values used on the last saved payment regardless of vendor.
If you want to use specific payment settings for the selected vendor, uncheck the Use payment method and cash account from last saved payment check box and select your desired options from the Payment method and Cash account lists. The next time you enter a payment for this vendor, the Payment Method and Cash Account will automatically populate with these options.
Tip: You can change the payment methods that appear in the list by clicking the Customize payment methods link. This will take you to the Vendor Defaults screen where you can add, edit, and delete vendor payment methods.