Is 11e sketch needed if there is single person in rtc

Hello sir, greetings of the day.
As per your query, yes, 11E sketch will be needed even if there is a single person in RTC for registration. 11 E sketch sets the boundaries for an existing survey number within which the part to be conveyed would be marked out. It is also known as the pre-mutation sketch which is required to be effective involving the part which extends the survey number. This sketch assures the availability of land for mutation and enables to update the land records after the confirmation of the transactions. You can also find reference from Os. Smt.Indramma vs Are 1. Sri D.Digambaranath on 27 February, 2017. 
Hope this solves your query.
Regards
Nirali Nayak
Law Student