thank you for you explanation. but is it the same problem can happened even when you not displaying the Unique ID. You still have potential for gap

thank you for you explanation. but is it the same problem can happened even when you not displaying the Unique ID. You still have potential for gap in the id's ? example:

1st person open the form id= UD_01

2nd  person open the form id= UD_02

3rd  person open the form id= UD_03

1st & 3rd  person submit the form but the 2nd  person change his mind ,here is the gap.

If I am wrong please explained.

I like to use Unique ID and display this ID to the sales people on the form and I don't want them to create there own numbers. What would you recommend ?

thank you

The IDs are assigned in the order the form is submitted, so if person A and C submits the form, person A will get the id= UD_01, and person C will get the id= UD_02. Let us know if you have more questions.

I see, now it make sense.

thank you