rank math fields not fetchings or syncing

[Musammil Kalluravi pattillath]

i am adding new custom fields:
rank_math_title, rank_math_description, rank_math_focus_keyword
Once i am adding through manage fields and fetching the products it’s not fetching these fields

[nmedia]

Hi,

are these fields return single value like string or serialized data? if it is serialized then it will not be fetched. and make sure these fields exists.

[Author]

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