Functinal Consultant; is responsible for configuring

functional aspects for which SAP supports or config as per

sap std.

Technical Consultant; he can change or modify or create new

tables, tcode, programmes, structure, fields as per client

requirement.

for example; he can create new/own BAPI/Script to design

output as per client requirement, he can change design of

screen, tabs etc.

In other word technical consultant can change standard sap

and create Z tables, tcode, programmes, structure, fields

to fullfill client requirement.