How to create a Zoho project with same Start Date and End Date

How to create a Zoho project with same Start Date and End Date

While trying to create a project in Zoho Projects portal through api call with same start date and end date, the project creation failed with the message "End date cannot be greater than Start date"; which is also weird, since both Start Date and End date are same, not greater than!!

Please let us know, if this is a product limitation or any other settings/configurations needs to be checked