I’m unable to create a transaction for a customer/vendor. What’s going on?

This might happen due to the contact type being wrongly specified. A contact can either be indicated as a vendor (sells goods or services to you), customer (buys goods or services from you) under the field Contact Type.

• Contacts marked as Customer can only be involved with quotes, invoices and credit notes. Bills and expenses cannot be created for them.
• Contacts marked as Vendor can only be involved with bills and expenses. Other transactions cannot be started for these contacts.

A contact can be changed anytime from a vendor to a customer and vice versa, by editing the Contact Type field in the Contact Details Page.