Rename filed value with pattern

I hear I can rename the value in index pattern, but I cannot find this. I can only change the type. eg. from number to string. Now I need to change value itself.
eg. product_shoes --> shoes
..and so on

You can use the field alias datatype in the mapping:

Thanks. I actually found what I was looking for and that is Static lookup as field type

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Ah great, you wanted to change the values of a field inside a document, not the name of a field. Static lookup is indeed the answer. :slight_smile:

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