When using Shopify with Shiptheory, you may have orders in your store that use the "Local Collection" shipping method in Shopify.
By default, these orders will not be able to send through to Shiptheory due to them not creating "fulfilment orders" in the Shopify side. As such, if you're wanting to have orders marked for "Local Collection" book through Shiptheory, we'd recommend setting up a new Shipping Method in Shopify also called "Local Collection" and using this instead, as this will act fundamentally different to the core shipping method for Local Collection.
For some more information on setting up Shipping Methods and Rates within Shopify, please see a Shopify guide here.
If you have any issues or questions there, please feel free to Contact Support.
