Other departments in our organization are also having this issue, they
use the SOAP API as well but do not use AuthorizeSauce (or even Python
for that matter) so second the notion that this is more widespread than
the original response of "don't use ...
We are also seeing this problem, and we are also using the
authorizesauce library. Interestingly enough not seeing this on our
staging environment pointing to the Authorize.net sandbox - only seems
to happen in the production environment.