Create a Shopify B2B company, assign payment terms, and set a net-30 due-date schedule via the Admin GraphQL API

In-depth guide

Steps

1. Call the companyCreate mutation with a name, externalId (your ERP account ID), and an initial companyLocation including a billingAddress and shippingAddress.
2. Use the companyAssignCustomerAsContact mutation to link an existing customer record (or create one first with customerCreate) to the company as a contact with the ADMIN role.
3. Call the companyLocationAssignRoles mutation to grant the contact PURCHASING_ROLE at the location.
4. Set payment terms by calling the paymentTermsCreate mutation referencing the companyLocationId and a paymentTermsTemplateId — retrieve available templates first with a paymentTermsTemplates query; look for the template with paymentTermsType FIXED and a 30-day net period.
5. Verify the setup by querying company(id:) with nested fields: locations, contacts, paymentTerms, and catalog to confirm catalog and price list assignment.
6. When the buyer places an order, the order will automatically carry the payment due date derived from the net-30 terms; monitor via the orders query filtering on paymentStatus.