How to connect a module with the Baselinker API to fetch stock levels from Baselinker into the stock module?

Connecting the Baselinker API with the stock module requires the professional version of the stock module.
After installing the pro version, an integration tab is available in the module:


here you need to enter your Baselinker API key and enable the integration:




if the key is valid, you will be able to fetch stock levels from the Baselinker API.