blackburntw

We had an issue with duplicate payments, and also with card transactions happening for non-existent orders. In our case it looks like it was caused by a plugin that allows customisation of the checkout fields. One of the fields (County/State) showed as optional on the users’ checkout page but showed as “Required” in the checkout field editor. Some users reported having problems with the County field being required which drew our attention to this anomaly. We think this caused WooCommerce to not action the order but process the transaction as the two elements work independently from the checkout page. Some users then populated the County field and tried again, creating a new (duplicate) transaction but only one order. Other users either didn’t notice the WooCommerce part hadn’t completed due to missing County field, or decided to come back another time, meaning the transaction had happened but there was no associated order. In none of these cases did WooCommerce notify us of a failed transaction. This might not apply to you but we are fingers-crossed it was the cause of our duplications. In our case there was often a few minutes between transactions but depends on how quick the users are!