Explain what reference consumption is

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/report-a-bug/explain-what-reference-consumption-is/
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The manual is essentially garbage. I search “reference consumption” and itenero says “its calculated automatically” however for me it is not and I’m required to put in a value but i cant figure out what that value is supposed to be… did anyone ever QA that???? Lazy