A receipt is the lawful bookkeeping report that shows the exchange subtleties between a trader and a client. Organizations need to create the receipt plan carefully as it addresses the brand and adds to clients' trust and shopping experience. The Magento 2 store administrator needs to create solicitations for orders set on the web. The receipt design in backend should likewise be to such an extent that helps administrator deal with the request subtleties without any problem. The administrator might need to add custom fields and change the arrangement of the current fields according to the business prerequisites. Here, I have taken the guide to change the sequence of custom field before ?subtotal? in invoice in Magento 2 backend. In this model, the "qty" custom field is added and the arrangement of "subtotal" changes as "qty" is set in the principal position.