Ok, I'm at a loss. I'm starting to work with 6.0 and I read here that the preferred type name in 6.x is '_doc'. However, when I try to PUT a new document, I get an error from the (6.0.1) server: Document mapping type name can't start with '_' I am using the precise example from the 6.x manual …

Can't use _doc as type despite it being declared the preferred method

percona.jayj (Jay Janssen) February 13, 2018, 8:29pm 7

I believe I was testing 6.1 or maybe a 6.0 version at the time. I can't upgrade to 6.x yet because of Creating new types in 6.0.

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