By default a unique security code will be added to each pickup order for verification purposes.
Should you wish to disable this please follow the instructions below. 

Login to Store Pickup + Delivery from your Shopify Apps page

Click Settings 

Click on the Store Pickup option:

Scroll down to the Security and fraud prevention block and uncheck Enable pickup security code:

Click Save:

Now you’re ready to go! Customers will no longer receive a security code when you mark an order as ready for pickup.

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