As this documentation stated (Run Lookup Field):
I really need answer for this, as this will affect my work for client application.
Any answer would be appreciated, thank you very much.
Since it is possible to get a lookup field automatically with the API, you can have a record of blank data in the app to look up, and you can obtain the record automatically to achieve the same result of getting the blank data on the lookup field.
I just found the solution by using clear() function and it’s worked on both desktop and mobile.
Thank you for the reply.