How to update the Cheque number Sequence

1. Navigate to Setup 
Go to Setup → System → Number Sequence.

Select Cheque Number Sequence
Use the Finder to locate the Cheque number sequence you want to update.

Open and Edit
Double-click the sequence to open it.
Change the Next Value to the correct number (e.g., if you’re on check #20, enter 20).

Save and Close
Save your changes and close the window.