Some time we noticed that there is Number sequence gap issues for Orders in Ax 2012 like you have created SO00001 then after sometimes you created then you got order SO00004 is creating instead of SO00002.
Reason for this kind of issue is as follow.
1.If you check to number sequence type then you will find that a continuous number sequence could be setup as Order.
2. If you create a new order and then delete it, no numbers added to the status list which can be freed and used again system maintain itself.
3. If you create a new order using but then you cancel it for example "Create sales order" form, and click "cancel" in the form then the number will be added to the status list. Then the number can be freed by clean-up and can be used again when a new order is created.
I hope you can get Idea from above observation.
Reason for this kind of issue is as follow.
1.If you check to number sequence type then you will find that a continuous number sequence could be setup as Order.
2. If you create a new order and then delete it, no numbers added to the status list which can be freed and used again system maintain itself.
3. If you create a new order using but then you cancel it for example "Create sales order" form, and click "cancel" in the form then the number will be added to the status list. Then the number can be freed by clean-up and can be used again when a new order is created.
I hope you can get Idea from above observation.