RE: Position Sequence number is not getting incremented for new position
Hello Rajat Agarwal,
Have you checked in the status list of this number sequence if any record is showing there or not?
Below screen shots have taken from D365 for your understanding.

if yes; can you please press Alt + F9 from the keyboard and delete this record.

After that you can also follow below steps in order to fix it.
--- Change the next 'Next' number to some other number. For example; change the next number from 1 to 2.
--- System will show you below popup message. Click on yes.

--- Then remove the tick mark from the 'Continuous' check box too. System will show you same popup message as above. Click on yes.
--- Then bring back the original next number from 2 to 1.
--- Set the continuous check box enabled again.
Now check if the issue get resolved or not.
Best regards,
Sourav Dam
Kindly mark this thread 'Yes' if this is answered your query which may help other community members in this forum.