how can I cancel all of Terms and Conditions of Seller Self-Delivery API Access?We want to reset it
I don’t clearly understand your question. But my guess is you want to change your Amazon MWS API access.
If my guess is correct I would suggest reading the Developer FAQ:
Dynamic Enterprise Technologies Inc
Seattle Washington USA
If you want to reset your MWS credentials, (get a different secret key) then you will need to start a ticket.
click Selling on Amazon->Marketplace Web Service->Registration & Access
Make sure you tell them you want to reset your credentials, not cancel them.