How can I change the numbering used for my invoices?

How to customize your prefixes and invoice numbering:

1. Click on the Settings tab and then select Business settings (in Sage Accounting Start go to More > Business settings)
2. Click Document Preferences
3. Save

Prefixes:

• Enter the text that wanted to appear before the relevant form type number up to a length of six characters
• This field can be left blank
• The Prefix can be changed anytime, the prefix displayed will be used for the next document created
  
  • NOTE: Please note Prefixes cannot be changed in Sage Business Cloud Accounting Start
• A yearly or monthly prefix and/or invoice numbering cannot be automatically generated. This will need to be done manually on a yearly and/or monthly basis

Numbering:

• You can numerically change the numbering for Quotes, invoices, and credit notes
• The numbering can be changed anytime, the number displayed will be used for the next document created
• You can also select whether you want to group the numbering sequence for your invoices and credit notes together or keep them separate

NOTE:

• The numbering can be changed, but not the number of an invoice you are creating or that is already created
  
• ​If an invoice has previously been canceled, the same number cannot be reused again in Accounting as it is used as a unique identifier
  
• Once an invoice is created, the reference cannot be changed anymore
  
• As a  workaround for the reference, modify the prefix by adding a space; dash; bis, etc. then reuse the same numbering, only the prefix will be slightly different, and the system will allow you to create this new reference
  
• You can't have more than one series of invoice numbering for the moment. Our developers are working to include more possibilities and customization in future versions
  
• When closing a financial year, sequential invoice numbering continues. Start from number 1 for the following financial year by changing the prefix (not available in Start).