Impala provides free access to our sandbox test hotel the Charleston. This hotel contains test data that can be used to configure your integration. The Charleston is built on Impala's test PMS and allows read and write functionality however this is the only PMS with POST functions.
You can use the Charleston hotel even when you have toggled the live mode within the management console. You will need to ensure that you are using the API token associated with the sandbox environment.
To retrieve the API token, set the Impala Management console to Test as per the below screenshot:
Please note that you can use both the production and sandbox API tokens at the same time.