API Explorer says:
Maximum pagination depth (page number x page size) before a query gets rejected
So if you have single queries pulling back that sheer volume of data, it'd be recommended to break that up, maybe by time span. API Explorer also says this is not configurable, so it appears to be a hard limit, not one you can request an increase on.

Genesys would also want you to use the jobs API for that, resource-wise. It doesn't change the limit on record count, though it is more conscious of platform resources and tuned for bulk data operations like yours.
/api/v2/analytics/conversations/details/jobs
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Paul McGurn
Senior Manager, Telecom & DevOps
Persistent Systems
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