Get order from additional order info

How can I retrieve an order that has a specific value set in an additional order info key?

Litium version: 6.2.0

You can search for your additional order info value:

var tagName = Litium.Foundation.Modules.ECommerce.Search.TagNames.GetTagNameForAdditionalOrderInfo("MyAdditionalOrderInfo");
query.FilterTags.Add(new Tag(tagName, "Value to search for"));

Read more here on creating your query