Please suggest this error's solution: The schema for profiles specified in the transition ('') is not compatible with the schema defined in the delivery template ('nms:recipient'). They should be identical.
You need to have profiles created before you send the email. Using load file activity will just load the data from your flat file and using this activity you can't create/update profiles in ACS. Usually after load file activity you need to have certain activities like update activity (insert/update profiles) and then using the profiles created send the delivery.