The API has an reference id but I can't change it.
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Please elaborate. A few things to mention: What SDK are you using? How are you creating the order? What "external id" or "reference id" are you referring to?
API not SDK. www . clover . com /api_docs#!/orders/CreateOrder
Can you key off of the order's id (13 character base32 uuid) as your external id?
What externalID? Are you talking about?
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