how can Lightspeed invoicing system be integrated with another invoicing system using APIs? I would like to have it connected to a third party invoicing system.
You can use our Sale endpoint to retrieve the necessary data and insert it into Lightspeed with the following sale endpoint:
A tutorial on how to use the Sale endpoint can be found here:
Documentation on the authentication process can be found here:
I hope this helps!
Integrations & Solutions Developer - Strategic Solutions