David i ran the put mapping which only generates mapping for the 4 fields. Rest all are dynamic fields which i am sending via java api. It has close to 1200 columns. After putting the data, i am seeing dynamic mapping fields like 'BRAND', 'COLOR' etc. which are stored as 'text' type but also have 'keyword' type as a nested structure. I dont want that, i only need 'text' type using dynamic template.