Deprecation warnings in Elasticsearch 6.8.3

Hi,
Could you please help me figuring out how to get rid of these deprecation warnings?

[WARN ][o.e.d.c.ParseField ] [analytics_08] key [timeout] is not supported in the metadata section and will be rejected in 7.x

[WARN ][o.e.d.c.ParseField ] [analytics_08] key [ignore] is not supported in the metadata section and will be rejected in 7.x

[WARN ][o.e.d.c.ParseField ] [analytics_08] key [requestTimeout] is not supported in the metadata section and will be rejected in 7.x

Can someone Please help me