Functional tests are not idempotent : creation of accounts

Observed behavior

Functional tests are not idempotent. When you run them for the first time, everything is OK. When you run the same tests a second time, 4 tests appear as being in error.

These four tests are in tests/Acceptance/BasicTestsAccountsCest.php:

createAccountAsAssociation
createAccountAsPerson
createAccountAsAdministration
createAccountAsServiceProvider

Expected behavior

Functional tests should be ok, even if they are run twice

Steps to reproduce

Create a Comptoir in Vagrant
Into the VM and from the Comptoir directory, run vendor/bin/codecept run Acceptance (all tests are green)
Re-run exactly the same command: vendor/bin/codecept run Acceptance, then 4 tests are red