Principles of numbering documents in accounting module:

• When adding a new document, option AUTO is displayed in the numerator, in segment Number.

• Upon saving a document or saving it automatically (e.g. upon going to tab Payments in case of VAT invoices), the system assigns a specific number to the document. This is the first free number according to date used in the numerator of a specific document type (VAT documents – registration date, accounting note and journal entry – date of issue).
• It is possible to use a free number by selecting it manually in the numerator, in field with number, but appropriate permissions to use free numbers must be granted to a given customer (Configuration → Company Structure → Operator Groups → Other Permissions: Using of free document number). 

• When editing a document, upon changing the document date or item, e.g. VAT account which directly affects the document number, the system automatically suggests a first free number for the given document date. It is possible to change it, if there are several free numbers available for the given date. A new system number is saved automatically and the previous one is released (it can be used in another document). A user cannot close a document without saving it. If attempted, the following message is displayed: “Unable to close the document. The document must be saved.”
• It is possible to change document number until the document is confirmed.