Error while assigning positions to the employees/workers in D365 Commerce(Retail)

At times you will get an error while creating positions for employees such as this: The assignment end date must not be earlier than the assignment start date

Here even if you put an Assignment end date you wont be able to create a position because the actual error is on the below form. Once you make changes to it and add date to available for assignment field, you will be able to create a position successfully

Hope this helps !