Can and where do I add Supplier VAT No. on QB online please ?

Hi info-true-sash-c Thanks for reaching out to us here on the Community. We note that you're using an Essentials product, therefore it's not possible to include a supplier VAT registration number (VRN) within the supplier details or on any purchase transactions. Our Advanced product however does enable you to create custom fields within the supplier details and purchase transactions therefore you would be able to include the VRN. We have included an article that maybe of some use if you were to consider upgrading to an Advanced product and a pricing and comparison link: https://quickbooks.intuit.com/learn-support/en-uk/help-article/purchase-orders/create-edit-custom-fields-quickbooks-online/L56PQNif3_GB_en_GB?uid=m2aj9cgl and https://quickbooks.intuit.com/uk/pricing/?&cid=ppc_G_QB_UK_GGL_B_Quickbooks_Pure_quickBooks+uk_txt&gad_source=1&gclid=EAIaIQobChMIk_q3lcuQiQMVpTMIBR0nNxeiEAAYASABEgKbhPD_BwE&gclsrc=aw.ds