Changes to Create a new TaxRate

the request property description became not nullable

the request property region became not nullable

the request property taxCategoryId became not nullable

deleted the header request parameter Sequence-Version

added the new optional header request parameter sequence-version

the response property description became nullable for the status 201

the response property region became nullable for the status 201

the response property taxCategoryId became nullable for the status 201

the response property updatedAt became nullable for the status 201

the request property description became nullable

the request property region became nullable

the request property taxCategoryId became nullable