Available in Sage Simply Accounting Enterprise and higher.
When you create a transaction, Sage Simply Accounting displays the next available form number on screen; for example, the next available invoice number. Although the displayed number is not reserved for your transaction, Sage Simply Accounting will assign it to your transaction if no other user posts a transaction to the same journal before you.
Form numbers in Sage Simply Accounting are not assigned until transactions are processed, recorded, or saved. In businesses where several users work in the same journal at the same time, there will be times when the transaction number displayed on screen is not the number available to be assigned.
To prevent the display of conflict messages, make sure to select the Next Available Form Number option for the forms you use in your business. When a transaction is processed, recorded, or saved, Sage Simply Accounting will automatically assign the next available transaction number.