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When we make backwards-incompatible changes to the API, we release new versions. The current version is version 2.5. A Changelog can be found here -https://flexiti.atlassian.net/wiki/x/GQCRAg
Channels
Our API is designed to work for both in-store and ecommerce integrations and we have two “channels” to support this. Each channel uses the same endpoints with slight changes in paramters.
“In-store” - denotes in-store point of sale integrations where the customer is present
“Online” - denotes online ecommerce integrations where the customer is not present