If you're about to raise your first invoice in Ember, the invoice will show with invoice reference as #1.
If you would like to start this from another number then you will need to head to the settings section.
From the settings tab, click Invoicing.
From this page, you will be able to edit the starting invoice number within Ember.
Please note: You will only be able to edit this number if you have not already drafted or sent an invoice in Ember. If you are looking to change the figures and you have already sent an invoice, please reach out to the team and they can help you change over these figures.