Changes to Get the ACH authorization agreement for a (bank account, amount) tuple

added the optional property error/authorization to the response with the 400 status

added the optional property error/authorization to the response with the 401 status

added the optional property error/authorization to the response with the 403 status

added the optional property error/authorization to the response with the default status

added the non-success response with the status 400

added the non-success response with the status 401

added the non-success response with the status 403

added the optional property error/api_client_id to the response with the default status

for the query request parameter amount_usd, the maxLength was set to 64

changed the pattern of the query request parameter account_id from ^mny_[0-9a-hjkmnp-tv-z]{26}$ to ^mny_[0-7][0-9a-hjkmnp-tv-z]{25}$