You can find an instruction how to change your company on Stackalytics here: https://wiki.openstack.org/wiki/Stackalytics#Company_affiliation

There is a set of Python tests which validate default_data.json To run these test you can use next commands:

pip install tox
tox -e py36

If default_data.json became invalid after you corrections you will see red Travis CI jobs in Github pull request:

There are two ways to understand what went wrong:

1. Run tests locally as described above
2. Go to Travis CI and check console output

To do it you need to click on Details link in front failed job. There you will see following description:

Here you need to click on The build link to get access to console log and see messages about failed tests: