Test a provider connection
Verifies that the saved credentials are valid by executing the provider's `test_connection`
adapter script. The script makes a lightweight API call to the POS system.
On success, the connection status is automatically updated to `connected`.
On failure, status is updated to `error` with the error message.
If no adapter script is available for this provider, falls back to basic credential validation.
Authentication
X-Api-Keystring
API Key authentication via header
Path parameters
slug
Provider slug (e.g. “revel”)
Response
OK
code
isSuccess
message
latencyMs
Errors
404
Not Found Error

