How to document api using swagger

Hi all am glad to be part of this community and i hope to learn more about swagger and other related stuff,

 Am blocked by swagger documentation process, the error looked familiar and i hope some of our members faced such error. the error looks like 

Resolver error at paths./patientprofile.post.parameters.0.schema.$ref

Could not resolve reference because of: Could not resolve pointer: /definitions/PatientprofileCreate does not exist in document.

According to my understanding, it means tthat the patientprofileCreate has not been documented. so how can i go over this, thanks alot, any help will be highly appreciated