I am working on building a custom integration from WooCommerce to our internal ERP. I hooked into the woocommerce_checkout_order_processed so that when an order is placed I send all relevant information to our ERP and the reply is an order ID. This is a different order ID than what is in WooCommerce and I need a way to map the ERP order ID to the WooCommerce order. This might cause unexpected behaviours in your code when you empty the user meta, your code can try to use add_user_meta instead of update_user_meta thinking the user does not have meta created yet. Filters You must log in to vote on the helpfulness of this note Vote results for this note: 6 You must log in to vote on the helpfulness of this note Run Function if Order Meta Exists - WooCommerce. Ask Question 0. If a checkbox is checked, it saves a value of 1 for a 'my_checkbox' custom order field in WooCommerce. I'm editing the order admin table and I need to be able to echo a particular icon url if the value of 'my_checkbox' equals 1 4 Tel: (704) 588-3246 Fax: (704) 588-3249 LINK 48 LINK System Fiber optic based control system SOFTWARE 50 DSE - Drive System Explorer On-line programming and diagnostic software for 890 Series Converters 51 DSI8000 Thank you very much for your awesome tutorial. Very helpful and educational. Just one question regarding step 5 "Add Custom Data as Metadata to the Order Items" I found that sending an array to wc_add_order_item_meta() of course serializes the meta value on the table woocommerce_order_itemmeta. This question came from Stack Overflow asking, for warranty purposes, how to save a product's SKU to the order item meta for future discovery.. The problem is that when a product still exists in an installation the SKU is available for reporting, etc. But once that product is deleted the SKU reference is now gone. Each meta array is then stored to an array with the key being the ID of the order meta data. The method get_formatted_meta_data then returns the